diff --git a/install.sh b/install.sh
index 0a65056..2d2b59f 100644
--- a/install.sh
+++ b/install.sh
@@ -2,7 +2,7 @@
 set -eu
 
 IMG="/storage"
-BASE=$(basename $URL .pat)
+BASE=$(basename "$URL" .pat)
 
 [ ! -f "/run/server.sh" ] && echo "Script must run inside Docker container!" && exit 60
 
diff --git a/run.sh b/run.sh
index 8bb642f..c218d09 100755
--- a/run.sh
+++ b/run.sh
@@ -10,7 +10,7 @@ else
 fi
 
 IMG="/storage"
-BASE=$(basename $URL .pat)
+BASE=$(basename "$URL" .pat)
 
 FILE="$IMG/$BASE.boot.img"
 [ ! -f "$FILE" ] && echo "ERROR: Synology DSM boot-image does not exist ($FILE)" && exit 81