diff --git a/src/message.c b/src/message.c
index 95f626c..872fadc 100644
--- a/src/message.c
+++ b/src/message.c
@@ -333,7 +333,7 @@
     }
     else
     {
-	buf[e - 1] = NUL;  // make sure it is truncated
+	buf[e - 1] = NUL;  /* make sure it is truncated */
     }
 }