diff --git a/wolfssl/wolfcrypt/visibility.h b/wolfssl/wolfcrypt/visibility.h
index fe2fccbed..07ba2f1b4 100644
--- a/wolfssl/wolfcrypt/visibility.h
+++ b/wolfssl/wolfcrypt/visibility.h
@@ -43,7 +43,7 @@
 */
 
 #if defined(BUILDING_WOLFSSL)
-    #if defined(_MSC_VER) || defined(__MINGW32__)
+    #if defined(_MSC_VER) || defined(__MINGW32__) || defined(__CYGWIN__)
         #if defined(WOLFSSL_DLL)
             #define WOLFSSL_API __declspec(dllexport)
         #else
@@ -61,7 +61,7 @@
         #define WOLFSSL_LOCAL
     #endif /* HAVE_VISIBILITY */
 #else /* BUILDING_WOLFSSL */
-    #if defined(_MSC_VER) || defined(__MINGW32__)
+    #if defined(_MSC_VER) || defined(__MINGW32__) || defined(__CYGWIN__)
         #if defined(WOLFSSL_DLL)
             #define WOLFSSL_API __declspec(dllimport)
         #else