diff --git a/roles/matrix-base/defaults/main.yml b/roles/matrix-base/defaults/main.yml
index 64556378..d303bf15 100644
--- a/roles/matrix-base/defaults/main.yml
+++ b/roles/matrix-base/defaults/main.yml
@@ -8,6 +8,9 @@
 # Example value: example.com
 matrix_domain: ~
 
+# The optional matrix admin MXID, used in bridges' configs to set bridge admin user
+matrix_admin: ''
+
 # This will contain the homeserver implementation that is in use.
 # Valid values: synapse, dendrite
 #
diff --git a/roles/matrix-bridge-beeper-linkedin/templates/config.yaml.j2 b/roles/matrix-bridge-beeper-linkedin/templates/config.yaml.j2
index 7310676d..6b33ffea 100644
--- a/roles/matrix-bridge-beeper-linkedin/templates/config.yaml.j2
+++ b/roles/matrix-bridge-beeper-linkedin/templates/config.yaml.j2
@@ -238,7 +238,7 @@ bridge:
     #     mxid - Specific user
     permissions:
         "{{ matrix_beeper_linkedin_homeserver_domain }}": user
-        {% if matrix_admin is defined and matrix_admin|length %}
+        {% if matrix_admin %}
         "{{ matrix_admin }}": admin
         {% endif %}
 
diff --git a/roles/matrix-bridge-go-skype-bridge/templates/config.yaml.j2 b/roles/matrix-bridge-go-skype-bridge/templates/config.yaml.j2
index f3dd7c29..6f7277fe 100644
--- a/roles/matrix-bridge-go-skype-bridge/templates/config.yaml.j2
+++ b/roles/matrix-bridge-go-skype-bridge/templates/config.yaml.j2
@@ -199,7 +199,7 @@ bridge:
     #     mxid - Specific user
     permissions:
         "{{ matrix_go_skype_bridge_homeserver_domain }}": user
-        {% if matrix_admin is defined and matrix_admin|length %}
+        {% if matrix_admin %}
         "{{ matrix_admin }}": admin
         {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-facebook/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-facebook/templates/config.yaml.j2
index 7dca6aff..2555e985 100644
--- a/roles/matrix-bridge-mautrix-facebook/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-facebook/templates/config.yaml.j2
@@ -203,7 +203,7 @@ bridge:
     #     mxid - Specific user
     permissions:
       '{{ matrix_mautrix_facebook_homeserver_domain }}': user
-      {% if matrix_admin is defined and matrix_admin|length %}
+      {% if matrix_admin %}
       '{{ matrix_admin }}': admin
       {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-googlechat/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-googlechat/templates/config.yaml.j2
index b7b90832..db4394b7 100644
--- a/roles/matrix-bridge-mautrix-googlechat/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-googlechat/templates/config.yaml.j2
@@ -119,7 +119,7 @@ bridge:
     #     mxid - Specific user
     permissions:
       '{{ matrix_mautrix_googlechat_homeserver_domain }}': user
-      {% if matrix_admin is defined and matrix_admin|length %}
+      {% if matrix_admin %}
       '{{ matrix_admin }}': admin
       {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-hangouts/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-hangouts/templates/config.yaml.j2
index 5b7bd8be..07f5b2d7 100644
--- a/roles/matrix-bridge-mautrix-hangouts/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-hangouts/templates/config.yaml.j2
@@ -116,7 +116,7 @@ bridge:
     #     mxid - Specific user
     permissions:
       '{{ matrix_mautrix_hangouts_homeserver_domain }}': user
-      {% if matrix_admin is defined and matrix_admin|length %}
+      {% if matrix_admin %}
       '{{ matrix_admin }}': admin
       {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-instagram/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-instagram/templates/config.yaml.j2
index 9ac7e2e3..994a39a7 100644
--- a/roles/matrix-bridge-mautrix-instagram/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-instagram/templates/config.yaml.j2
@@ -187,7 +187,7 @@ bridge:
   #     mxid - Specific user
   permissions:
     "{{ matrix_mautrix_instagram_homeserver_domain }}": user
-    {% if matrix_admin is defined and matrix_admin|length %}
+    {% if matrix_admin %}
     "{{ matrix_admin }}": admin
     {% endif %}
   # Provisioning API part of the web server for automated portal creation and fetching information.
diff --git a/roles/matrix-bridge-mautrix-signal/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-signal/templates/config.yaml.j2
index 3ca35b2f..53aa550d 100644
--- a/roles/matrix-bridge-mautrix-signal/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-signal/templates/config.yaml.j2
@@ -225,7 +225,7 @@ bridge:
     #     mxid - Specific user
     permissions: 
         {{ matrix_mautrix_signal_bridge_permissions|from_yaml }}
-        {% if matrix_admin is defined and matrix_admin|length %}
+        {% if matrix_admin %}
         "{{ matrix_admin }}": admin
         {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-telegram/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-telegram/templates/config.yaml.j2
index b2288257..20055ab7 100644
--- a/roles/matrix-bridge-mautrix-telegram/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-telegram/templates/config.yaml.j2
@@ -291,7 +291,7 @@ bridge:
     #     mxid - Specific user
     permissions:
       '{{ matrix_mautrix_telegram_homeserver_domain }}': full
-      {% if matrix_admin is defined and matrix_admin|length %}
+      {% if matrix_admin %}
       '{{ matrix_admin }}': admin
       {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-twitter/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-twitter/templates/config.yaml.j2
index 2b3b4140..6b32d47b 100644
--- a/roles/matrix-bridge-mautrix-twitter/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-twitter/templates/config.yaml.j2
@@ -175,7 +175,7 @@ bridge:
     #     mxid - Specific user
     permissions:
       '{{ matrix_mautrix_twitter_homeserver_domain }}': user
-      {% if matrix_admin is defined and matrix_admin|length %}
+      {% if matrix_admin %}
       '{{ matrix_admin }}': admin
       {% endif %}
 
diff --git a/roles/matrix-bridge-mautrix-whatsapp/templates/config.yaml.j2 b/roles/matrix-bridge-mautrix-whatsapp/templates/config.yaml.j2
index d3b26ba6..b9862e94 100644
--- a/roles/matrix-bridge-mautrix-whatsapp/templates/config.yaml.j2
+++ b/roles/matrix-bridge-mautrix-whatsapp/templates/config.yaml.j2
@@ -187,7 +187,7 @@ bridge:
     #     mxid - Specific user
     permissions:
         "{{ matrix_mautrix_whatsapp_homeserver_domain }}": user
-        {% if matrix_admin is defined and matrix_admin|length %}
+        {% if matrix_admin %}
         "{{ matrix_admin }}": admin
         {% endif %}