diff --git a/src/win32/win_main.c b/src/win32/win_main.c
index 663eddbd..d84c8623 100644
--- a/src/win32/win_main.c
+++ b/src/win32/win_main.c
@@ -69,7 +69,7 @@ static HCURSOR windowCursor = NULL; // main window cursor
 
 static LPCSTR wClassName = "SRB2WC";
 
-boolean appActive = false; // app window is active
+INT appActive = false; // app window is active
 
 #ifdef LOGMESSAGES
 FILE *logstream;
diff --git a/src/win32/win_main.h b/src/win32/win_main.h
index ed55246a..326a813d 100644
--- a/src/win32/win_main.h
+++ b/src/win32/win_main.h
@@ -23,7 +23,7 @@
 
 extern HWND hWndMain;
 
-extern boolean appActive;
+extern INT appActive;
 
 VOID I_GetSysMouseEvents(INT mouse_state);
 extern UINT MSHWheelMessage;