diff --git a/src/cairoint.h b/src/cairoint.h
index cfa77dd..fbc0776 100644
--- a/src/cairoint.h
+++ b/src/cairoint.h
@@ -48,7 +48,7 @@
 
 #include "config.h"
 
-#ifdef _MSC_VER
+#ifdef _WIN32
 #define cairo_public __declspec(dllexport)
 #endif