diff --git a/windows/alloc.c b/windows/alloc.c
index 87e79a88..c5225fbe 100644
--- a/windows/alloc.c
+++ b/windows/alloc.c
@@ -9,7 +9,7 @@
 
 static HANDLE heap;
 
-BOOL initAlloc(void)
+int initAlloc(void)
 {
 	heap = HeapCreate(0, 0, 0);
 	return heap != NULL;
diff --git a/windows/uipriv_windows.h b/windows/uipriv_windows.h
index 499fdcb1..2fcf5b59 100644
--- a/windows/uipriv_windows.h
+++ b/windows/uipriv_windows.h
@@ -77,4 +77,4 @@ extern void runMenuEvent(WORD, uiWindow *);
 extern void freeMenubar(HMENU);
 
 // alloc.c
-extern BOOL initAlloc(void);
+extern int initAlloc(void);