diff --git a/tests/baselines/reference/typeGuardsOnClassProperty.errors.txt b/tests/baselines/reference/typeGuardsOnClassProperty.errors.txt
index 7d56c9a204..4e6a8b83ae 100644
--- a/tests/baselines/reference/typeGuardsOnClassProperty.errors.txt
+++ b/tests/baselines/reference/typeGuardsOnClassProperty.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts(14,71): error TS2339: Property 'join' does not exist on type 'string | string[]'.
+tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts(14,70): error TS2339: Property 'join' does not exist on type 'string | string[]'.
 tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts(26,44): error TS2339: Property 'toLowerCase' does not exist on type 'string | number'.
 
 
@@ -7,7 +7,7 @@ tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts(26,4
     // have no effect on members of objects such as properties. 
     
     // Note that the class's property must be copied to a local variable for
-    // the type guard to have an affect
+    // the type guard to have an effect
     class D {
         data: string | string[];
         getData() {
@@ -16,8 +16,8 @@ tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts(26,4
         }
     
         getData1() {
-            return typeof this.data === "string" ? this.data : this. data.join(" ");
-                                                                          ~~~~
+            return typeof this.data === "string" ? this.data : this.data.join(" ");
+                                                                         ~~~~
 !!! error TS2339: Property 'join' does not exist on type 'string | string[]'.
         }
     }
diff --git a/tests/baselines/reference/typeGuardsOnClassProperty.js b/tests/baselines/reference/typeGuardsOnClassProperty.js
index 5edecd36b8..de4fcb5063 100644
--- a/tests/baselines/reference/typeGuardsOnClassProperty.js
+++ b/tests/baselines/reference/typeGuardsOnClassProperty.js
@@ -3,7 +3,7 @@
 // have no effect on members of objects such as properties. 
 
 // Note that the class's property must be copied to a local variable for
-// the type guard to have an affect
+// the type guard to have an effect
 class D {
     data: string | string[];
     getData() {
@@ -12,7 +12,7 @@ class D {
     }
 
     getData1() {
-        return typeof this.data === "string" ? this.data : this. data.join(" ");
+        return typeof this.data === "string" ? this.data : this.data.join(" ");
     }
 }
 
@@ -32,7 +32,7 @@ if (typeof prop1 === "string" && prop1.toLocaleLowerCase()) { }
 // Note that type guards affect types of variables and parameters only and 
 // have no effect on members of objects such as properties. 
 // Note that the class's property must be copied to a local variable for
-// the type guard to have an affect
+// the type guard to have an effect
 var D = (function () {
     function D() {
     }
diff --git a/tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts b/tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts
index 20a0bf8242..2c26b10c6a 100644
--- a/tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts
+++ b/tests/cases/conformance/expressions/typeGuards/typeGuardsOnClassProperty.ts
@@ -2,7 +2,7 @@
 // have no effect on members of objects such as properties. 
 
 // Note that the class's property must be copied to a local variable for
-// the type guard to have an affect
+// the type guard to have an effect
 class D {
     data: string | string[];
     getData() {
@@ -11,7 +11,7 @@ class D {
     }
 
     getData1() {
-        return typeof this.data === "string" ? this.data : this. data.join(" ");
+        return typeof this.data === "string" ? this.data : this.data.join(" ");
     }
 }