diff --git a/entrypoint.sh b/entrypoint.sh
index 2d3d4c2bb35f0a9f80ab4007e78d6966c27b3b1f..ab5940d13427ef83a22b805effe8861d38930138 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -65,17 +65,17 @@ backup () {
     done
 
     # ZIP BACKUP #
-    cd $TEMPDIR
-    tar -zcvf ${BACKUP_PREFIX}-${NOW}.tar.gz *.sql
+    cd "$TEMPDIR"
+    tar -zcvf $"{BACKUP_PREFIX}-${NOW}.tar.gz" *.sql
     echo "---"
-    du -h ${BACKUP_PREFIX}-${NOW}.tar.gz
+    du -h "${BACKUP_PREFIX}-${NOW}.tar.gz"
     cd - > /dev/null
 
     # MOVE BACKUP TO BACKUP DIR #
-    mv -f ${TEMPDIR}/${BACKUP_PREFIX}-${NOW}.tar.gz "${BACKUPDIR}"
+    mv -f "${TEMPDIR}/${BACKUP_PREFIX}-${NOW}.tar.gz" "${BACKUPDIR}"
 
     # CLEANUP #
-    rm -rf ${TEMPDIR}
+    rm -rf "${TEMPDIR}"
 }
 
 ########################################################################