diff --git a/Windows/MainWindowMenu.cpp b/Windows/MainWindowMenu.cpp
index df47c40d41..1e3f4cc3fa 100644
--- a/Windows/MainWindowMenu.cpp
+++ b/Windows/MainWindowMenu.cpp
@@ -871,7 +871,9 @@ namespace MainWindow {
 			break;
 
 		case ID_OPTIONS_FULLSCREEN:
-			SendToggleFullscreen(!g_Config.UseFullScreen());
+			if (!g_Config.bShowImDebugger) {
+				SendToggleFullscreen(!g_Config.UseFullScreen());
+			}
 			break;
 
 		case ID_OPTIONS_TEXTUREFILTERING_AUTO:   g_Config.iTexFiltering = TEX_FILTER_AUTO; break;