diff --git a/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/index.js b/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/index.js
index 688abd1383ecb..a413dd316b7e3 100644
--- a/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/index.js
+++ b/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/index.js
@@ -249,7 +249,7 @@ export const ml = {
 
   recognizeIndex(obj) {
     return http({
-      url: `${basePath()}/modules/recognize/${obj.indexPatternTitle}`,
+      url: `${basePath()}/modules/recognize/${encodeURIComponent(obj.indexPatternTitle)}`,
       method: 'GET',
     });
   },
@@ -308,7 +308,9 @@ export const ml = {
     ]);
 
     return http({
-      url: `${basePath()}/data_visualizer/get_field_stats/${obj.indexPatternTitle}`,
+      url: `${basePath()}/data_visualizer/get_field_stats/${encodeURIComponent(
+        obj.indexPatternTitle
+      )}`,
       method: 'POST',
       data,
     });
@@ -326,7 +328,9 @@ export const ml = {
     ]);
 
     return http({
-      url: `${basePath()}/data_visualizer/get_overall_stats/${obj.indexPatternTitle}`,
+      url: `${basePath()}/data_visualizer/get_overall_stats/${encodeURIComponent(
+        obj.indexPatternTitle
+      )}`,
       method: 'POST',
       data,
     });
diff --git a/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/jobs.js b/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/jobs.js
index 1ac391c7f84ae..cef2b3d2ffd7f 100644
--- a/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/jobs.js
+++ b/x-pack/legacy/plugins/ml/public/application/services/ml_api_service/jobs.js
@@ -127,7 +127,9 @@ export const jobs = {
   newJobCaps(indexPatternTitle, isRollup = false) {
     const isRollupString = isRollup === true ? `?rollup=true` : '';
     return http({
-      url: `${basePath()}/jobs/new_job_caps/${indexPatternTitle}${isRollupString}`,
+      url: `${basePath()}/jobs/new_job_caps/${encodeURIComponent(
+        indexPatternTitle
+      )}${isRollupString}`,
       method: 'GET',
     });
   },