diff --git a/src/libstrongswan/plugins/blowfish/blowfish.h b/src/libstrongswan/plugins/blowfish/blowfish.h
index ad853afd8..9aa30df4b 100644
--- a/src/libstrongswan/plugins/blowfish/blowfish.h
+++ b/src/libstrongswan/plugins/blowfish/blowfish.h
@@ -98,7 +98,7 @@ extern "C" {
 #else
 #include <sys/types.h>
 #endif
-#define BF_LONG uint32_t
+#define BF_LONG u_int32_t
 #endif
 
 #define BF_ROUNDS	16