diff --git a/dlls/winecrt0/register.c b/dlls/winecrt0/register.c
index ce4167b9647..757e424fed5 100644
--- a/dlls/winecrt0/register.c
+++ b/dlls/winecrt0/register.c
@@ -31,7 +31,7 @@
 
 static inline void *image_base(void)
 {
-#if defined(__MINGW32__) || defined(_MSC_VER)
+#ifdef __WINE_PE_BUILD
     extern IMAGE_DOS_HEADER __ImageBase;
     return (void *)&__ImageBase;
 #else