diff --git a/src/ce_common.pas b/src/ce_common.pas
index 9f5742ca..0bd0e4c6 100644
--- a/src/ce_common.pas
+++ b/src/ce_common.pas
@@ -1046,7 +1046,7 @@ begin
     exit;
   if str[1] = ';' then
     result := true;
-  if (length(str) > ) and (str[1..2] = '//') then
+  if (length(str) > 1) and (str[1..2] = '//') then
     result := true;
 end;