diff --git a/doc/developer/building-frr-on-ubuntu1204.rst b/doc/developer/building-frr-on-ubuntu1204.rst
index c1a7822443..e646180aca 100644
--- a/doc/developer/building-frr-on-ubuntu1204.rst
+++ b/doc/developer/building-frr-on-ubuntu1204.rst
@@ -75,7 +75,7 @@ Add frr groups and user
 
 ::
 
-    sudo groupadd -g 92 frr
+    sudo groupadd -r -g 92 frr
     sudo groupadd -r -g 85 frrvty
     sudo adduser --system --ingroup frr --home /var/run/frr/ \
        --gecos "FRR suite" --shell /sbin/nologin frr
diff --git a/doc/developer/building-frr-on-ubuntu1404.rst b/doc/developer/building-frr-on-ubuntu1404.rst
index c7b09539b0..681cc30a3b 100644
--- a/doc/developer/building-frr-on-ubuntu1404.rst
+++ b/doc/developer/building-frr-on-ubuntu1404.rst
@@ -29,7 +29,7 @@ Add frr groups and user
 
 ::
 
-    sudo groupadd -g 92 frr
+    sudo groupadd -r -g 92 frr
     sudo groupadd -r -g 85 frrvty
     sudo adduser --system --ingroup frr --home /var/run/frr/ \
        --gecos "FRR suite" --shell /sbin/nologin frr
diff --git a/doc/developer/building-frr-on-ubuntu1604.rst b/doc/developer/building-frr-on-ubuntu1604.rst
index db6f75ce35..69c4e44d98 100644
--- a/doc/developer/building-frr-on-ubuntu1604.rst
+++ b/doc/developer/building-frr-on-ubuntu1604.rst
@@ -30,7 +30,7 @@ Add frr groups and user
 
 ::
 
-    sudo groupadd -g 92 frr
+    sudo groupadd -r -g 92 frr
     sudo groupadd -r -g 85 frrvty
     sudo adduser --system --ingroup frr --home /var/run/frr/ \
        --gecos "FRR suite" --shell /sbin/nologin frr
diff --git a/doc/developer/building-frr-on-ubuntu1804.rst b/doc/developer/building-frr-on-ubuntu1804.rst
index 955ce0390d..50e90fc7ea 100644
--- a/doc/developer/building-frr-on-ubuntu1804.rst
+++ b/doc/developer/building-frr-on-ubuntu1804.rst
@@ -49,7 +49,7 @@ Add frr groups and user
 
 ::
 
-   sudo groupadd -g 92 frr
+   sudo groupadd -r -g 92 frr
    sudo groupadd -r -g 85 frrvty
    sudo adduser --system --ingroup frr --home /var/run/frr/ \
       --gecos "FRR suite" --shell /sbin/nologin frr