diff --git a/graphql_test.go b/graphql_test.go
index 8df3be7dd2..fd20d41ca6 100644
--- a/graphql_test.go
+++ b/graphql_test.go
@@ -1370,7 +1370,8 @@ func TestInput(t *testing.T) {
 					boolean(value: true)
 					nullable1: nullable(value: 42)
 					nullable2: nullable(value: null)
-					list(value: [{v: 41}, {v: 42}, {v: 43}])
+					list1: list(value: [{v: 41}, {v: 42}, {v: 43}])
+					list2: list(value: {v: 42})
 				}
 			`,
 			ExpectedResult: `
@@ -1383,7 +1384,8 @@ func TestInput(t *testing.T) {
 					"boolean": true,
 					"nullable1": 42,
 					"nullable2": null,
-					"list": [41, 42, 43]
+					"list1": [41, 42, 43],
+					"list2": [42]
 				}
 			`,
 		},
diff --git a/internal/exec/packer.go b/internal/exec/packer.go
index 5007dfd220..64601a934c 100644
--- a/internal/exec/packer.go
+++ b/internal/exec/packer.go
@@ -167,7 +167,11 @@ func (e *listPacker) pack(r *request, value interface{}) (reflect.Value, error)
 		value = r.vars[string(v)]
 	}
 
-	list := value.([]interface{})
+	list, ok := value.([]interface{})
+	if !ok {
+		list = []interface{}{value}
+	}
+
 	v := reflect.MakeSlice(e.sliceType, len(list), len(list))
 	for i := range list {
 		packed, err := e.elem.pack(r, list[i])