diff --git a/src/u_makeproject.pas b/src/u_makeproject.pas
index 48bc7b6e..96f01cdf 100644
--- a/src/u_makeproject.pas
+++ b/src/u_makeproject.pas
@@ -518,11 +518,11 @@ begin
   if not fRuleIndex.equals(0) then
       fMakeProc.Parameters.Add(fRules[fRuleIndex]);
   if makeProjectOptions.keepGoing then
-    fMakeProc.Parameters.Add(' -k');
+    fMakeProc.Parameters.Add('-k');
   if makeProjectOptions.quiet then
-    fMakeProc.Parameters.Add(' -q');
+    fMakeProc.Parameters.Add('-q');
   if makeProjectOptions.numThreads > 1 then
-    fMakeProc.Parameters.Add(' -j' + makeProjectOptions.numThreads.ToString());
+    fMakeProc.Parameters.Add('-j' + makeProjectOptions.numThreads.ToString());
 
   fMakeProc.Options := fMakeProc.Options + [poStderrToOutPut, poUsePipes];
   fMakeProc.ShowWindow := swoHIDE;