diff --git a/stack.sh b/stack.sh
index a0ac7e0ecb..c545c56de3 100755
--- a/stack.sh
+++ b/stack.sh
@@ -509,7 +509,7 @@ function exit_trap {
 
     if [[ $r -ne 0 ]]; then
         echo "Error on exit"
-        # If we error before we've installed os-testr, which will fail.
+        # If we error before we've installed os-testr, this will fail.
         if type -p generate-subunit > /dev/null; then
             generate-subunit $DEVSTACK_START_TIME $SECONDS 'fail' >> ${SUBUNIT_OUTPUT}
         fi
@@ -519,7 +519,7 @@ function exit_trap {
             $TOP_DIR/tools/worlddump.py -d $LOGDIR
         fi
     else
-        # If we error before we've installed os-testr, which will fail.
+        # If we error before we've installed os-testr, this will fail.
         if type -p generate-subunit > /dev/null; then
             generate-subunit $DEVSTACK_START_TIME $SECONDS >> ${SUBUNIT_OUTPUT}
         fi