diff --git a/utils/NightlyTest.pl b/utils/NightlyTest.pl
index 50756bf3f6e..8ab3a59929f 100755
--- a/utils/NightlyTest.pl
+++ b/utils/NightlyTest.pl
@@ -198,7 +198,7 @@ my $BuildWallTime = GetRegexNum "^real", 1, "([0-9.]+)","$Prefix-Build-Log.txt";
 
 my $BuildError = "";
 if (`grep '^gmake[^:]*: .*Error' $Prefix-Build-Log.txt | wc -l` + 0 ||
-    `grep '^gmake: \*\*\*.*Stop.`+0) {
+    `grep '^gmake: \*\*\*.*Stop.' $Prefix-Build-Log.txt | wc -l`+0) {
   $BuildError = "<h3><font color='red'>Build error: compilation " .
                 "<a href=\"$DATE-Build-Log.txt\">aborted</a></font></h3>";
 }