diff --git a/src/beesort.c b/src/beesort.c
index b8fa6b4..69fe110 100644
--- a/src/beesort.c
+++ b/src/beesort.c
@@ -61,6 +61,7 @@ int my_compare_data(void *a, void *b)
 
 void my_print(void *key, void *data)
 {
+    (void)key;
     fputs(data, stdout);
 }