diff --git a/lib/libproc/_libproc.h b/lib/libproc/_libproc.h
index aee1ac1f67f8..aab085006623 100644
--- a/lib/libproc/_libproc.h
+++ b/lib/libproc/_libproc.h
@@ -49,7 +49,7 @@ struct proc_handle {
 };
 
 #ifdef DEBUG
-#define DPRINTF(fmt, ...) 	warn(fmt, __VA_ARGS__)
+#define DPRINTF(...) 	warn(__VA_ARGS__)
 #else
-#define DPRINTF(fmt, ...)
+#define DPRINTF(...)
 #endif