diff --git a/metamod/src/jitasm.h b/metamod/src/jitasm.h
index d20f4ab..6562d91 100644
--- a/metamod/src/jitasm.h
+++ b/metamod/src/jitasm.h
@@ -117,7 +117,7 @@
 	#define JITASM_TRACE	jitasm::detail::Trace
 	#endif
 #elif defined(JITASM_GCC)
-	#define JITASM_TRACE(...)	(()0)
+	#define JITASM_TRACE(...)	((void)0)
 #else
 	#define JITASM_TRACE	__noop
 #endif
diff --git a/metamod/src/mutil.h b/metamod/src/mutil.h
index b840519..e886ed6 100644
--- a/metamod/src/mutil.h
+++ b/metamod/src/mutil.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#include <util.h>
+#include <dllapi.h>
+#include <plinfo.h>
+
 // max buffer size for printed messages
 #define MAX_LOGMSG_LEN 1024