diff --git a/packages/fcl-web/src/base/fphttpserver.pp b/packages/fcl-web/src/base/fphttpserver.pp
index 2c12042450..ed5f6e41f4 100644
--- a/packages/fcl-web/src/base/fphttpserver.pp
+++ b/packages/fcl-web/src/base/fphttpserver.pp
@@ -420,7 +420,7 @@ begin
     Exit;
     end;
   N:=Copy(V,1,P-1);
-  Delete(V,1,P+1);
+  Delete(V,1,P);
   V:=Trim(V);
   ARequest.SetFieldByName(N,V);
 end;