diff --git a/source/uCEFApplicationCore.pas b/source/uCEFApplicationCore.pas
index 28f23c17..bf74122f 100644
--- a/source/uCEFApplicationCore.pas
+++ b/source/uCEFApplicationCore.pas
@@ -1636,7 +1636,13 @@ begin
       aValues.Add(aNewValue);
     end
    else
-    aValues[i] := aValues[i] + ',' + aNewValue;
+    if (length(aNewValue) > 0) then
+      begin
+        if (length(aValues[i]) > 0) then
+          aValues[i] := aValues[i] + ',' + aNewValue
+         else
+          aValues[i] := aNewValue;
+      end;
 end;
 
 procedure TCefApplicationCore.ReplaceSwitch(var aKeys, aValues : TStringList; const aNewKey, aNewValue : ustring);
diff --git a/update_CEF4Delphi.json b/update_CEF4Delphi.json
index 2982c3f7..2b7e84f9 100644
--- a/update_CEF4Delphi.json
+++ b/update_CEF4Delphi.json
@@ -2,7 +2,7 @@
   "UpdateLazPackages" : [
     {
       "ForceNotify" : true,
-      "InternalVersion" : 171,
+      "InternalVersion" : 172,
       "Name" : "cef4delphi_lazarus.lpk",
       "Version" : "84.3.8.0"
     }