diff --git a/docs/fiddles/features/macos-dark-mode/main.js b/docs/fiddles/features/macos-dark-mode/main.js
index 4f0254e95bd8..9503efb5f9a9 100644
--- a/docs/fiddles/features/macos-dark-mode/main.js
+++ b/docs/fiddles/features/macos-dark-mode/main.js
@@ -22,7 +22,7 @@ function createWindow () {
   })
 
   ipcMain.handle('dark-mode:system', () => {
-    nativeTheme.themeSouce = 'system'
+    nativeTheme.themeSource = 'system'
   })
 }
 
diff --git a/docs/tutorial/dark-mode.md b/docs/tutorial/dark-mode.md
index 5ac69241ebae..bbb2f6381435 100644
--- a/docs/tutorial/dark-mode.md
+++ b/docs/tutorial/dark-mode.md
@@ -159,7 +159,7 @@ function createWindow () {
   })
 
   ipcMain.handle('dark-mode:system', () => {
-    nativeTheme.themeSouce = 'system'
+    nativeTheme.themeSource = 'system'
   })
 }