diff --git a/roles/matrix-bridge-mautrix-whatsapp/defaults/main.yml b/roles/matrix-bridge-mautrix-whatsapp/defaults/main.yml
index 0d4f9852..beda6d7d 100644
--- a/roles/matrix-bridge-mautrix-whatsapp/defaults/main.yml
+++ b/roles/matrix-bridge-mautrix-whatsapp/defaults/main.yml
@@ -46,7 +46,7 @@ matrix_mautrix_whatsapp_database_hostname: 'matrix-postgres'
 matrix_mautrix_whatsapp_database_port: 5432
 matrix_mautrix_whatsapp_database_name: 'matrix_mautrix_whatsapp'
 
-matrix_mautrix_whatsapp_database_connection_string: 'postgresql://{{ matrix_mautrix_whatsapp_database_username }}:{{ matrix_mautrix_whatsapp_database_password }}@{{ matrix_mautrix_whatsapp_database_hostname }}:{{ matrix_mautrix_whatsapp_database_port }}/{{ matrix_mautrix_whatsapp_database_name }}'
+matrix_mautrix_whatsapp_database_connection_string: 'postgresql://{{ matrix_mautrix_whatsapp_database_username }}:{{ matrix_mautrix_whatsapp_database_password }}@{{ matrix_mautrix_whatsapp_database_hostname }}:{{ matrix_mautrix_whatsapp_database_port }}/{{ matrix_mautrix_whatsapp_database_name }}?sslmode=disable'
 
 matrix_mautrix_whatsapp_appservice_database_type: "{{
 	{