diff --git a/tools/scratch.cpp b/tools/scratch.cpp
index 2eedd054..8d0cd357 100644
--- a/tools/scratch.cpp
+++ b/tools/scratch.cpp
@@ -1,7 +1,10 @@
 #include <cstdlib>
 
 int
-main (void)
+main (int argc, char **argv)
 {
+    (void)argc;
+    (void)argv;
+
     return EXIT_SUCCESS;
 }