1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/cast/cast_lcl.h b/src/lib/libcrypto/cast/cast_lcl.h
index cfe3842e91..5fab8a43f6 100644
--- a/src/lib/libcrypto/cast/cast_lcl.h
+++ b/src/lib/libcrypto/cast/cast_lcl.h
@@ -151,7 +151,7 @@
                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
                          *((c)++)=(unsigned char)(((l)     )&0xff))
 
-#if defined(WIN32)
+#if defined(WIN32) && defined(_MSC_VER)
 #define ROTL(a,n)     (_lrotl(a,n))
 #else
 #define ROTL(a,n)     ((((a)<<(n))&0xffffffffL)|((a)>>(32-(n))))