diff --git a/src/DEBIAN_postinst.in b/src/DEBIAN_postinst.in
index e29c770c10..a878cf688b 100755
--- a/src/DEBIAN_postinst.in
+++ b/src/DEBIAN_postinst.in
@@ -4,6 +4,11 @@
 # it already exists
 do_create_rdc_user() {
     useradd -r -s /bin/nologin rdc
+    if [ $(getent group render) ]; then
+        usermod -a -G render rdc
+    else
+        usermod -a -G video rdc
+    fi
     # Make sure this doesn't return non-zero if an id already exists
     return 0
 }
diff --git a/src/RPM_rpm_post.in b/src/RPM_rpm_post.in
index f99611e85e..3e535e6b39 100755
--- a/src/RPM_rpm_post.in
+++ b/src/RPM_rpm_post.in
@@ -2,6 +2,12 @@
 
 do_create_rdc_user() {
     useradd -r -s /bin/nologin rdc
+    if [ $(getent group render) ]; then
+        usermod -a -G render rdc
+    else
+        usermod -a -G video rdc
+    fi
+
     # Make sure this doesn't return non-zero if an id already exists
     return 0
 }