diff --git a/common.S b/common.S
index 4fab30c..117e8b1 100644
--- a/common.S
+++ b/common.S
@@ -1,4 +1,4 @@
-#if (defined(_WIN32) && defined(__i386__)) || defined(__APPLE__)
+#if (defined(_WIN32) && defined(__i386__)) || defined(__CYGWIN32__) || defined(__APPLE__)
 #define CDECL(symbol) _##symbol
 #else
 #define CDECL(symbol) symbol