diff --git a/linPEAS/linpeas.sh b/linPEAS/linpeas.sh
index 5afa195..9225463 100755
--- a/linPEAS/linpeas.sh
+++ b/linPEAS/linpeas.sh
@@ -1126,7 +1126,7 @@ if [ "`echo $CHECKS | grep SofI`" ]; then
   grep "PermitRootLogin \|ChallengeResponseAuthentication \|PasswordAuthentication \|UsePAM \|Port\|PermitEmptyPasswords\|PubkeyAuthentication\|ListenAddress\|FordwardAgent" /etc/ssh/sshd_config 2>/dev/null | grep -v "#" | sed "s,PermitRootLogin.*es\|PermitEmptyPasswords.*es\|ChallengeResponseAuthentication.*es\|FordwardAgent.*es,${C}[1;31m&${C}[0m,"
 
   if [ "$privatekeyfiles" ]; then
-    privatekeyfilesgrep=`grep -L "\"\|'\|(" $privatekeyfiles` # Check there aren't unexpected symbols in the file
+    privatekeyfilesgrep=`grep -L "\"\|'\|(" "$privatekeyfiles"` # Check there aren't unexpected symbols in the file
   fi
   if [ "$privatekeyfilesgrep" ]; then
     printf "Private SSH keys found!:\n$privatekeyfilesgrep\n" | sed "s,.*,${C}[1;31m&${C}[0m,"