diff --git a/cov.sh b/cov.sh
index 7d13c8c96..9f2a87a47 100755
--- a/cov.sh
+++ b/cov.sh
@@ -15,7 +15,7 @@ if ! type kcov > /dev/null; then
 	exit 1
 fi
 
-cargo test --no-run || exit 2
+cargo test --no-run || exit $?
 mkdir -p target/coverage
 kcov --exclude-pattern ~/.multirust --include-pattern src --verify target/coverage target/debug/ethcore*
 xdg-open target/coverage/index.html