diff --git a/loader/win32.c b/loader/win32.c
index 9143702878..d0cbddca66 100644
--- a/loader/win32.c
+++ b/loader/win32.c
@@ -1412,9 +1412,10 @@ static void WINAPI expInitializeCriticalSection(CRITICAL_SECTION* c)
     return;
 }
 
-static void WINAPI expInitializeCriticalSectionAndSpinCount(CRITICAL_SECTION* c, DWORD spin)
+static WIN_BOOL WINAPI expInitializeCriticalSectionAndSpinCount(CRITICAL_SECTION* c, DWORD spin)
 {
     expInitializeCriticalSection(c);
+    return 1;
 }
 
 static void WINAPI expEnterCriticalSection(CRITICAL_SECTION* c)