diff --git a/src/rules/spaceAfterTypeColon.js b/src/rules/spaceAfterTypeColon.js
index d1d5b5d3..069a0aa9 100644
--- a/src/rules/spaceAfterTypeColon.js
+++ b/src/rules/spaceAfterTypeColon.js
@@ -24,5 +24,17 @@ export default iterateFunctionNodes((context) => {
                 }
             }
         });
+
+        if (functionNode.returnType) {
+            const spaceAfter = functionNode.returnType.typeAnnotation.start - functionNode.returnType.start - 1;
+
+            if (always && spaceAfter > 1) {
+                context.report(functionNode, 'There must be 1 space after return type colon.');
+            } else if (always && spaceAfter === 0) {
+                context.report(functionNode, 'There must be a space after return type colon.');
+            } else if (!always && spaceAfter > 0) {
+                context.report(functionNode, 'There must be no space after return type colon.');
+            }
+        }
     };
 });
diff --git a/tests/rules/assertions/spaceAfterTypeColon.js b/tests/rules/assertions/spaceAfterTypeColon.js
index 79b727a4..100f015d 100644
--- a/tests/rules/assertions/spaceAfterTypeColon.js
+++ b/tests/rules/assertions/spaceAfterTypeColon.js
@@ -54,6 +54,37 @@ export default {
             options: [
                 'always'
             ]
+        },
+        {
+            code: '():Object => {}',
+            errors: [
+                {
+                    message: 'There must be a space after return type colon.'
+                }
+            ],
+            options: [
+                'always'
+            ]
+        }, {
+            code: '(): Object => {}',
+            errors: [
+                {
+                    message: 'There must be no space after return type colon.'
+                }
+            ],
+            options: [
+                'never'
+            ]
+        }, {
+            code: '():  Object => {}',
+            errors: [
+                {
+                    message: 'There must be 1 space after return type colon.'
+                }
+            ],
+            options: [
+                'always'
+            ]
         }
     ],
     valid: [
@@ -74,6 +105,17 @@ export default {
             options: [
                 'always'
             ]
+        },
+        {
+            code: '():Object => {}',
+            options: [
+                'never'
+            ]
+        }, {
+            code: '(): Object => {}',
+            options: [
+                'always'
+            ]
         }
     ]
 };