diff --git a/tests/utils/fptime.pp b/tests/utils/fptime.pp
index 992b09be0f..676a4cc1b7 100644
--- a/tests/utils/fptime.pp
+++ b/tests/utils/fptime.pp
@@ -9,7 +9,7 @@ begin
   if paramcount>0 then
     begin
       for i:=2 to paramcount do
-        ps:=ps+' '+paramstr(i);
+        ps:=ps+' "'+paramstr(i)+'"';
       sticks:=GetMicroSTicks;
       ExecuteProcess(paramstr(1),ps);
       writeln(stderr,(GetMicroSTicks-sticks)/1000:0:3,' ms');