diff --git a/samples/calculator/android/src/main/res/layout/activity_main.xml b/samples/calculator/android/src/main/res/layout/activity_main.xml
index b86099edb22..73b2810335c 100644
--- a/samples/calculator/android/src/main/res/layout/activity_main.xml
+++ b/samples/calculator/android/src/main/res/layout/activity_main.xml
@@ -9,7 +9,7 @@
         style="@style/TextAppearance.AppCompat.Subhead"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/enter_mathematic_exression" />
+        android:text="@string/enter_mathematical_expression" />
 
     <EditText
         android:id="@+id/input"
diff --git a/samples/calculator/android/src/main/res/values/strings.xml b/samples/calculator/android/src/main/res/values/strings.xml
index c042c2b9aef..add2d6a43d2 100644
--- a/samples/calculator/android/src/main/res/values/strings.xml
+++ b/samples/calculator/android/src/main/res/values/strings.xml
@@ -1,4 +1,4 @@
 <resources>
     <string name="app_name">Konan Calculator</string>
-    <string name="enter_mathematic_exression">Enter mathematic exression:</string>
+    <string name="enter_mathematical_expression">Enter mathematical expression:</string>
 </resources>