diff --git a/lib/curl_setup.h b/lib/curl_setup.h
index bd30ba9cbc..caf9cab4ea 100644
--- a/lib/curl_setup.h
+++ b/lib/curl_setup.h
@@ -1411,10 +1411,10 @@ CURL_EXTERN ALLOC_FUNC FILE *curl_dbg_fdopen(int filedes, const char *mode,
 #define CURL_FREEADDRINFO(data) \
   curl_dbg_freeaddrinfo(data, __LINE__, __FILE__)
 #define CURL_SOCKET(domain, type, protocol) \
-  curl_dbg_socket((int)domain, type, protocol, __LINE__, __FILE__)
+  curl_dbg_socket((int)(domain), type, protocol, __LINE__, __FILE__)
 #ifdef HAVE_SOCKETPAIR
 #define CURL_SOCKETPAIR(domain, type, protocol, socket_vector) \
-  curl_dbg_socketpair((int)domain, type, protocol, socket_vector, \
+  curl_dbg_socketpair((int)(domain), type, protocol, socket_vector, \
                       __LINE__, __FILE__)
 #endif
 #define CURL_ACCEPT(sock, addr, len) \