diff --git a/Windows/MainWindow.cpp b/Windows/MainWindow.cpp
index 6d3358dd57..484a6c1b63 100644
--- a/Windows/MainWindow.cpp
+++ b/Windows/MainWindow.cpp
@@ -685,8 +685,8 @@ namespace MainWindow
 			}
 			break;
 
-    case WM_ERASEBKGND:
-      // This window is always covered by DisplayWindow. No reason to erase.
+		case WM_ERASEBKGND:
+			// This window is always covered by DisplayWindow. No reason to erase.
 			return 1;
 
 		case WM_MOVE: