diff --git a/src/ce_dmdwrap.pas b/src/ce_dmdwrap.pas
index d1145909..1db95d3d 100644
--- a/src/ce_dmdwrap.pas
+++ b/src/ce_dmdwrap.pas
@@ -916,6 +916,11 @@ var
 begin
   for str1 in fCustom do if str1 <> '' then
   begin
+    if str1[1] = ';' then
+        continue;
+    if length(str1) > 1 then
+      if str1[1..2] = '//' then
+        continue;
     if str1[1] <> '-' then
       str2 := '-' + str1
     else