diff --git a/src/bridges/bridge_python_generic_hash_mp.c b/src/bridges/bridge_python_generic_hash_mp.c
index 6ff1edc98..e5599e76f 100644
--- a/src/bridges/bridge_python_generic_hash_mp.c
+++ b/src/bridges/bridge_python_generic_hash_mp.c
@@ -188,7 +188,7 @@ typedef struct
 
 } python_interpreter_t;
 
-#if defined (_WIN) || defined (__APPLE__)
+#if defined (_WIN) || defined (__CYGWIN__) || defined (__APPLE__)
 static char *DEFAULT_SOURCE_FILENAME = "generic_hash_sp";
 #else
 static char *DEFAULT_SOURCE_FILENAME = "generic_hash_mp";