diff --git a/cleancov b/cleancov
index bdf241d..8a9966c 100755
--- a/cleancov
+++ b/cleancov
@@ -6,6 +6,6 @@
 #
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-source ${DIR}/envcov.sh
+source "${DIR}"/envcov.sh
 
 LCOV --zerocounters -d "${OBJ_DIR}"