diff --git a/roles/custom/matrix-bridge-mautrix-gvoice/templates/config.yaml.j2 b/roles/custom/matrix-bridge-mautrix-gvoice/templates/config.yaml.j2
index 815cd589b..dc6f9c24a 100644
--- a/roles/custom/matrix-bridge-mautrix-gvoice/templates/config.yaml.j2
+++ b/roles/custom/matrix-bridge-mautrix-gvoice/templates/config.yaml.j2
@@ -8,7 +8,7 @@ network:
 # Config options that affect the central bridge module.
 bridge:
     # The prefix for commands. Only required in non-management rooms.
-    command_prefix: '!gv'
+    command_prefix: {{ matrix_bridge_mautrix_gvoice_command_prefix | to_json }}
     # Should the bridge create a space for each login containing the rooms that account is in?
     personal_filtering_spaces: {{ matrix_bridge_mautrix_gvoice_bridge_personal_filtering_spaces | to_json }}
     # Whether the bridge should set names and avatars explicitly for DM portals.