diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index c8a42d5991be0e6d4dd69da53b8bc23f0995529e..c444c4fcc8c47a7aa020e95c1c432179e170812d 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -3634,6 +3634,8 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
 
     $iteration = $i;
 
+    undef %force_config;
+
     my $makecmd = set_test_option("MAKE_CMD", $i);
 
     # Load all the options into their mapped variable names