diff --git a/tools/cover.sh b/tools/cover.sh
index 74a05981..f9750cc9 100755
--- a/tools/cover.sh
+++ b/tools/cover.sh
@@ -31,7 +31,7 @@ uncommitted=$(git status --porcelain | grep -v "^??")
 git checkout HEAD^
 
 baseline_report=$(mktemp -t manila_coverageXXXXXXX)
-find . -type f -name "*.pyc" -delete && ./run_tests.sh -V --coverage --no-pep8 $TESTR_ARGS
+find . -type f -name "*.pyc" -delete && ./run_tests.sh -N --coverage --no-pep8 $TESTR_ARGS
 coverage report > $baseline_report
 baseline_missing=$(awk 'END { print $3 }' $baseline_report)
 
@@ -41,7 +41,7 @@ git checkout -
 
 # Generate and save coverage report
 current_report=$(mktemp -t manila_coverageXXXXXXX)
-find . -type f -name "*.pyc" -delete && ./run_tests.sh -V --coverage --no-pep8 $TESTR_ARGS
+find . -type f -name "*.pyc" -delete && ./run_tests.sh -N --coverage --no-pep8 $TESTR_ARGS
 coverage report > $current_report
 current_missing=$(awk 'END { print $3 }' $current_report)