diff --git a/dist/vue-apollo.esm.js b/dist/vue-apollo.esm.js
index b794f8ad..552bf216 100644
--- a/dist/vue-apollo.esm.js
+++ b/dist/vue-apollo.esm.js
@@ -2961,9 +2961,15 @@ var SmartSubscription = function (_SmartApollo2) {
   createClass(SmartSubscription, [{
     key: 'executeApollo',
     value: function executeApollo(variables) {
+      var variablesJson = JSON.stringify(variables);
       if (this.sub) {
+        // do nothing if subscription is already running using exactly the same variables
+        if (variablesJson === this.previousVariablesJson) {
+          return;
+        }
         this.sub.unsubscribe();
       }
+      this.previousVariablesJson = variablesJson;
 
       var apolloOptions = this.generateApolloOptions(variables);
 
diff --git a/dist/vue-apollo.min.js b/dist/vue-apollo.min.js
index d4d8620b..7ef705c0 100644
--- a/dist/vue-apollo.min.js
+++ b/dist/vue-apollo.min.js
@@ -1 +1 @@
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t,e,r,i=arguments.length,n=Array(i),o=0;o<i;o++)n[o]=arguments[o];this.options.watchLoading&&(t=this.options.watchLoading).call.apply(t,[this.vm].concat(n)),this.vm.$apollo.watchLoading&&(e=this.vm.$apollo.watchLoading).call.apply(e,[this.vm].concat(n)),this.vm.$apollo.provider.watchLoading&&(r=this.vm.$apollo.provider.watchLoading).call.apply(r,[this.vm].concat(n))}},{key:"applyLoadingModifier",value:function(t){var e=this.loadingKey;e&&"number"==typeof this.vm[e]&&(this.vm[e]+=t),this.watchLoading(1===t,t)}},{key:"loadingDone",value:function(){this.loading&&this.applyLoadingModifier(-1),this.loading=!1}},{key:"fetchMore",value:function(){var t=this;if(this.observer){var e;return this.maySetLoading(!0),(e=this.observer).fetchMore.apply(e,arguments).then(function(e){return e.loading||t.loadingDone(),e})}}},{key:"subscribeToMore",value:function(){if(this.observer){var t;return{unsubscribe:(t=this.observer).subscribeToMore.apply(t,arguments)}}}},{key:"refetch",value:function(t){var 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t(e){tr(this,t),this._apolloSubscriptions=[],this._watchers=[],this.vm=e,this.queries={},this.subscriptions={},this.client=void 0,this.loadingKey=void 0,this.error=void 0}return er(t,[{key:"query",value:function(t){return this.getClient(t).query(t)}},{key:"getClient",value:function(t){if(!t||!t.client){if("object"===Ze(this.client))return this.client;if(this.client){if(this.provider.clients){var e=this.provider.clients[this.client];if(!e)throw new Error("[vue-apollo] Missing client '"+this.client+"' in 'apolloProvider'");return e}throw new Error("[vue-apollo] Missing 'clients' options in 'apolloProvider'")}return this.provider.defaultClient}var r=this.provider.clients[t.client];if(!r)throw new Error("[vue-apollo] Missing client '"+t.client+"' in 'apolloProvider'");return r}},{key:"watchQuery",value:function(t){var e=this,r=this.getClient(t).watchQuery(t),i=r.subscribe.bind(r);return r.subscribe=function(t){var r=i(t);return e._apolloSubscriptions.push(r),r},r}},{key:"mutate",value:function(t){return this.getClient(t).mutate(t)}},{key:"subscribe",value:function(t){var e=this,r=this.getClient(t).subscribe(t),i=r.subscribe.bind(r);return r.subscribe=function(t){var r=i(t);return e._apolloSubscriptions.push(r),r},r}},{key:"addSmartQuery",value:function(t,e){var r=this;e=At(e,this.vm);var i=this.queries[t]=new lr(this.vm,t,e,!1);i.autostart();var n=e.subscribeToMore;return n&&(Array.isArray(n)?n.forEach(function(e,n){r.addSmartSubscription(""+t+n,ir({},e,{linkedQuery:i}))}):this.addSmartSubscription(t,ir({},n,{linkedQuery:i}))),i}},{key:"addSmartSubscription",value:function(t,e){e=At(e,this.vm);var r=this.subscriptions[t]=new cr(this.vm,t,e,!1);return r.autostart(),r}},{key:"defineReactiveSetter",value:function(t,e){var r=this;this._watchers.push(this.vm.$watch(e,function(e){r[t]=e},{immediate:!0}))}},{key:"destroy",value:function(){var t=!0,e=!1,r=void 0;try{for(var i,n=this._watchers[Symbol.iterator]();!(t=(i=n.next()).done);t=!0){var o=i.value;o()}}catch(t){e=!0,r=t}finally{try{!t&&n.return&&n.return()}finally{if(e)throw r}}for(var s in this.queries)this.queries[s].destroy();for(var a in this.subscriptions)this.subscriptions[a].destroy();this._apolloSubscriptions.forEach(function(t){t.unsubscribe()}),this._apolloSubscriptions=null,this.vm=null}},{key:"provider",get:function(){return this._apolloProvider||this.vm.$root._apolloProvider}},{key:"skipAllQueries",set:function(t){for(var e in this.queries)this.queries[e].skip=t}},{key:"skipAllSubscriptions",set:function(t){for(var e in this.subscriptions)this.subscriptions[e].skip=t}},{key:"skipAll",set:function(t){this.skipAllQueries=t,this.skipAllSubscriptions=t}}]),t}(),hr=function(){function t(e){if(tr(this,t),!e)throw new Error("Options argument required");this.clients=e.clients||{},this.clients.defaultClient=this.defaultClient=e.defaultClient,this.defaultOptions=e.defaultOptions,this.watchLoading=e.watchLoading,this.errorHandler=e.errorHandler,this.prefetchQueries=[]}return er(t,[{key:"willPrefetchQuery",value:function(t,e){this.prefetchQueries.push({queryOptions:t,client:e})}},{key:"willPrefetch",value:function(t){t=St(t);var e=t.apollo;if(e){var r=e.$client;for(var i in e){var n=e[i];"$"===i.charAt(0)||n.query&&("undefined"!=typeof n.ssr&&!n.ssr||"undefined"==typeof n.prefetch||!n.prefetch)||this.willPrefetchQuery(n,n.client||r)}}}},{key:"willPrefetchComponents",value:function(t){var e=!0,r=!1,i=void 0;try{for(var n,o=t[Symbol.iterator]();!(e=(n=o.next()).done);e=!0){var s=n.value;this.willPrefetch(s)}}catch(t){r=!0,i=t}finally{try{!e&&o.return&&o.return()}finally{if(r)throw i}}}},{key:"prefetchAll",value:function(t,e,r){var i=this;r||!e||Array.isArray(e)||(r=e,e=void 0);var n=Object.assign({},{includeGlobal:!0},r);return e&&this.willPrefetchComponents(e),n.includeGlobal&&this.willPrefetchComponents(pr),Promise.all(this.prefetchQueries.map(function(e){return i.prefetchQuery(e.queryOptions,t,e.client)}))}},{key:"prefetchQuery",value:function(t,e,r){var i=void 0;if(r){if("string"==typeof r&&(r=this.clients[r],!r))throw new Error("[vue-apollo] Missing client '"+r+"' in 'apolloProvider'")}else r=this.defaultClient;if(t.query){var n=t.prefetch,o="undefined"==typeof n?"undefined":Ze(n);if("undefined"!==o){var s=void 0;if(s="function"===o?n(e):n,!s)return Promise.resolve();if("boolean"===o){var a=t.variables;i="undefined"!=typeof a?"function"==typeof a?a.call(e):a:void 0}else i=s}}else t={query:t};return new Promise(function(e,n){var o=ve(t,Ye);o.variables=i,r.query(o).then(e,n)})}},{key:"getStates",value:function(t){var e=Object.assign({},{exportNamespace:""},t),r={};for(var i in this.clients){var n=this.clients[i],o=rr({},n.reduxRootKey||"apollo",n.getInitialState());r[""+e.exportNamespace+i]=o}return r}},{key:"exportStates",value:function(t){var e=Object.assign({},{globalName:"__APOLLO_STATE__",attachTo:"window"},t),r=this.getStates(e),i=e.attachTo+"."+e.globalName+" = "+JSON.stringify(r)+";";return i}}]),t}(),pr=[],vr=["$subscribe"],yr=function(){var t=void 0;if(t=this.$options.apolloProvider?this._apolloProvider=this.$options.apolloProvider:this.$root._apolloProvider,!this._apolloPrepared){this._apolloPrepared=!0;var e=this.$options.apollo;if(e){this._apolloQueries={},this._apolloInitData={},e.$init||(e.$init=!0,t.defaultOptions&&(e=this.$options.apollo=Object.assign({},t.defaultOptions,e)));for(var r in e)"$"!==r.charAt(0)&&(this._apolloInitData[r]=null,this._apolloQueries[r]=e[r])}}},dr=function(){if(!this._apolloLaunched){this._apolloLaunched=!0;var t=this.$options.apollo;if(t&&(xt(this.$apollo,"skipAll",t.$skipAll),xt(this.$apollo,"skipAllQueries",t.$skipAllQueries),xt(this.$apollo,"skipAllSubscriptions",t.$skipAllSubscriptions),xt(this.$apollo,"client",t.$client),xt(this.$apollo,"loadingKey",t.$loadingKey),xt(this.$apollo,"error",t.$error),xt(this.$apollo,"watchLoading",t.$watchLoading)),this._apolloQueries)for(var e in this._apolloQueries)this.$apollo.addSmartQuery(e,this._apolloQueries[e]);if(t&&(t.subscribe&&ze.Vue.util.warn("vue-apollo -> `subscribe` option is deprecated. Use the `$subscribe` option instead."),t.$subscribe))for(var r in t.$subscribe)this.$apollo.addSmartSubscription(r,t.$subscribe[r])}};hr.install=Et;var br=hr,gr=null;"undefined"!=typeof window?gr=window.Vue:"undefined"!=typeof global&&(gr=global.Vue),gr&&gr.use(hr),t.install=Et,t.ApolloProvider=br,t.default=hr,t.willPrefetch=Pt}(this.VueApollo=this.VueApollo||{});
diff --git a/dist/vue-apollo.umd.js b/dist/vue-apollo.umd.js
index 85ffcdc6..149d7914 100644
--- a/dist/vue-apollo.umd.js
+++ b/dist/vue-apollo.umd.js
@@ -2967,9 +2967,15 @@ var SmartSubscription = function (_SmartApollo2) {
   createClass(SmartSubscription, [{
     key: 'executeApollo',
     value: function executeApollo(variables) {
+      var variablesJson = JSON.stringify(variables);
       if (this.sub) {
+        // do nothing if subscription is already running using exactly the same variables
+        if (variablesJson === this.previousVariablesJson) {
+          return;
+        }
         this.sub.unsubscribe();
       }
+      this.previousVariablesJson = variablesJson;
 
       var apolloOptions = this.generateApolloOptions(variables);
 
diff --git a/src/smart-apollo.js b/src/smart-apollo.js
index b579dd84..40c98dec 100644
--- a/src/smart-apollo.js
+++ b/src/smart-apollo.js
@@ -340,9 +340,15 @@ export class SmartSubscription extends SmartApollo {
   ]
 
   executeApollo (variables) {
+    const variablesJson = JSON.stringify(variables)
     if (this.sub) {
+      // do nothing if subscription is already running using exactly the same variables
+      if (variablesJson === this.previousVariablesJson) {
+        return
+      }
       this.sub.unsubscribe()
     }
+    this.previousVariablesJson = variablesJson
 
     const apolloOptions = this.generateApolloOptions(variables)