diff --git a/plugins/module_utils/raw.py b/plugins/module_utils/raw.py
index 32705282..f3469d70 100644
--- a/plugins/module_utils/raw.py
+++ b/plugins/module_utils/raw.py
@@ -84,7 +84,7 @@ class KubernetesRawModule(KubernetesAnsibleModule):
     def argspec(self):
         argument_spec = copy.deepcopy(COMMON_ARG_SPEC)
         argument_spec.update(copy.deepcopy(AUTH_ARG_SPEC))
-        argument_spec['merge_type'] = dict(type='list', choices=['json', 'merge', 'strategic-merge'])
+        argument_spec['merge_type'] = dict(type='list', elements='str', choices=['json', 'merge', 'strategic-merge'])
         argument_spec['wait'] = dict(type='bool', default=False)
         argument_spec['wait_sleep'] = dict(type='int', default=5)
         argument_spec['wait_timeout'] = dict(type='int', default=120)
diff --git a/plugins/modules/k8s.py b/plugins/modules/k8s.py
index 91646da2..4ff6898c 100644
--- a/plugins/modules/k8s.py
+++ b/plugins/modules/k8s.py
@@ -66,6 +66,7 @@ options:
     - merge
     - strategic-merge
     type: list
+    elements: str
     version_added: "2.7"
   wait:
     description:
diff --git a/plugins/modules/k8s_info.py b/plugins/modules/k8s_info.py
index c7db1c5b..49757616 100644
--- a/plugins/modules/k8s_info.py
+++ b/plugins/modules/k8s_info.py
@@ -59,9 +59,11 @@ options:
   label_selectors:
     description: List of label selectors to use to filter results
     type: list
+    elements: str
   field_selectors:
     description: List of field selectors to use to filter results
     type: list
+    elements: str
 
 extends_documentation_fragment:
   - community.kubernetes.k8s_auth_options
@@ -170,8 +172,8 @@ class KubernetesInfoModule(KubernetesAnsibleModule):
                 api_version=dict(default='v1', aliases=['api', 'version']),
                 name=dict(),
                 namespace=dict(),
-                label_selectors=dict(type='list', default=[]),
-                field_selectors=dict(type='list', default=[]),
+                label_selectors=dict(type='list', elements='str', default=[]),
+                field_selectors=dict(type='list', elements='str', default=[]),
             )
         )
         return args
diff --git a/plugins/modules/k8s_service.py b/plugins/modules/k8s_service.py
index dc580019..b4d14429 100644
--- a/plugins/modules/k8s_service.py
+++ b/plugins/modules/k8s_service.py
@@ -73,6 +73,7 @@ options:
     - merge
     - strategic-merge
     type: list
+    elements: str
   name:
     description:
       - Use to specify a Service object name.
@@ -98,6 +99,7 @@ options:
       - A list of ports to expose.
       - U(https://kubernetes.io/docs/concepts/services-networking/service/#multi-port-services)
     type: list
+    elements: dict
   selector:
     description:
       - Label selectors identify objects this Service should apply to.
@@ -188,7 +190,7 @@ SERVICE_ARG_SPEC = {
     },
     'name': {'required': True},
     'namespace': {'required': True},
-    'merge_type': {'type': 'list', 'choices': ['json', 'merge', 'strategic-merge']},
+    'merge_type': {'type': 'list', 'elements': 'str', 'choices': ['json', 'merge', 'strategic-merge']},
     'selector': {'type': 'dict'},
     'type': {
         'type': 'str',
@@ -196,7 +198,7 @@ SERVICE_ARG_SPEC = {
             'NodePort', 'ClusterIP', 'LoadBalancer', 'ExternalName'
         ],
     },
-    'ports': {'type': 'list'},
+    'ports': {'type': 'list', 'elements': 'dict'},
 }