1 files changed, 2 insertions, 0 deletions

diff --git a/parser.y b/parser.y
index 81e7dd0a..1e800be0 100644
--- a/parser.y
+++ b/parser.y
@@ -1350,6 +1350,8 @@ void yydebug_onoff(int val)
 {
 #if YYDEBUG
   yydebug = val;
+#else
+  (void) val;
 #endif
 }