diff --git a/shell/mount.sh b/shell/mount.sh
index ed78546..b27b1a2 100644
--- a/shell/mount.sh
+++ b/shell/mount.sh
@@ -73,9 +73,12 @@ uo() {
 }
 
 mr() {
-	local f
-	for f in "dev" "dev/pts" "proc" "sys"; do
-		mount --bind "/${f}" "overlay/mount/${f}"
+	local directory
+	for directory in "dev" "dev/pts" "proc" "sys"; do
+		if ! mount --bind "/${directory}" "overlay/mount/${directory}"; then
+			log_error "Unable to bind mount directory: ${directory}"
+			return 1
+		fi
 	done
 }