diff --git a/lib/delphi/test/TestClient.pas b/lib/delphi/test/TestClient.pas
index 9ca90d9..e547413 100644
--- a/lib/delphi/test/TestClient.pas
+++ b/lib/delphi/test/TestClient.pas
@@ -85,12 +85,14 @@
 begin
   if b
   then result := 'true'
-  else result := 'false';
-end;
-
-
-{ TTestClient }
-
+  else result := 'false';
+end;
+
+// not available in all versions, so make sure we have this one imported
+function IsDebuggerPresent: BOOL; stdcall; external KERNEL32 name 'IsDebuggerPresent';
+
+{ TTestClient }
+
 class procedure TTestClient.Execute(const args: array of string);
 var
   i : Integer;