diff --git a/plugins/modules/gcp_compute_firewall.py b/plugins/modules/gcp_compute_firewall.py
index fff726c..a47606b 100644
--- a/plugins/modules/gcp_compute_firewall.py
+++ b/plugins/modules/gcp_compute_firewall.py
@@ -540,6 +540,7 @@ def main():
             target_tags=dict(type='list', elements='str'),
         ),
         mutually_exclusive=[
+            ['allowed', 'denied'],
             ['destination_ranges', 'source_ranges', 'source_tags'],
             ['destination_ranges', 'source_ranges'],
             ['source_service_accounts', 'source_tags', 'target_tags'],
diff --git a/plugins/modules/gcp_compute_health_check.py b/plugins/modules/gcp_compute_health_check.py
index b710295..2c04233 100644
--- a/plugins/modules/gcp_compute_health_check.py
+++ b/plugins/modules/gcp_compute_health_check.py
@@ -895,7 +895,8 @@ def main():
                     port_specification=dict(type='str'),
                 ),
             ),
-        )
+        ),
+        mutually_exclusive=[['http2_health_check', 'http_health_check', 'https_health_check', 'ssl_health_check', 'tcp_health_check']],
     )
 
     if not module.params['scopes']: