diff --git a/libexec/portzap/portzap-clone b/libexec/portzap/portzap-clone
index dd29706..c612ae8 100755
--- a/libexec/portzap/portzap-clone
+++ b/libexec/portzap/portzap-clone
@@ -12,7 +12,7 @@ branch=$3
 ##
 # main
 if ! "${libexec}"/isportzap-member; then
-    echo "[-] This command must be run by a member of the _portzap group"
+    echo "[-] This command must be run by a member of the '_portzap' group"
     exit 1
 fi
 
diff --git a/libexec/portzap/portzap-erase b/libexec/portzap/portzap-erase
index 19a18be..2b27b2f 100644
--- a/libexec/portzap/portzap-erase
+++ b/libexec/portzap/portzap-erase
@@ -9,7 +9,7 @@ installdir=$2
 ##
 # main
 if ! "${libexec}"/isportzap-member; then
-    echo "[-] This command must be run by a member of the _portzap group"
+    echo "[-] This command must be run by a member of the '_portzap' group"
     exit 1
 fi
 
diff --git a/libexec/portzap/portzap-pull b/libexec/portzap/portzap-pull
index 4b4e0bb..585c936 100755
--- a/libexec/portzap/portzap-pull
+++ b/libexec/portzap/portzap-pull
@@ -28,7 +28,7 @@ change_branch()
 ##
 # main
 if ! "${libexec}"/isportzap-member; then
-    echo "[-] This command must be run by a member of the _portzap group"
+    echo "[-] This command must be run by a member of the '_portzap' group"
     exit 1
 fi