diff --git a/common_x86.h b/common_x86.h
index ab9f22b0d..4363fb2f4 100644
--- a/common_x86.h
+++ b/common_x86.h
@@ -62,7 +62,7 @@ static void __inline blas_lock(volatile BLASULONG *address){
 
 #if defined(_MSC_VER) && !defined(__clang__)
 	// use intrinsic instead of inline assembly
-	ret = _InterlockedExchange(address, 1);
+	ret = _InterlockedExchange((volatile LONG *)address, 1);
 	// inline assembly
 	/*__asm {
 		mov eax, address