diff --git a/pbc b/pbc
index 919f9df..36f8ae2 100755
--- a/pbc
+++ b/pbc
@@ -34,7 +34,7 @@ EOF
 
 function full_usage() {
   usage true
-  [ ! -e "$PBC" ] && echo "Error: $PBC is not executable!" >&2 && return 254
+  [ ! -x "$PBC" ] && echo "Error: $PBC is not executable!" >&2 && return 254
   echo "Commands of proxmox-backup-client:"
   echo
   "$PBC" help | tail -n +3
@@ -273,7 +273,7 @@ else
   source "$cfgfile" || exit $?
   PBC=${PBC:-/usr/local/bin/proxmox-backup-client}
   [ ! -f "$PBC" ] && echo "Error: $PBC: no such file" >&2 && exit 200
-  [ ! -e "$PBC" ] && echo "Error: $PBC: not executable" >&2 && exit 200
+  [ ! -x "$PBC" ] && echo "Error: $PBC: not executable" >&2 && exit 200
   ! command -v jq >/dev/null && echo "Error: jq executable not found!" >&2 && exit 200
 fi