diff --git a/ci/roles/subnet/tasks/subnet-allocation.yml b/ci/roles/subnet/tasks/subnet-allocation.yml
index d2fb2686..56a60da5 100644
--- a/ci/roles/subnet/tasks/subnet-allocation.yml
+++ b/ci/roles/subnet/tasks/subnet-allocation.yml
@@ -17,6 +17,19 @@
     allocation_pool_start: 192.168.0.2
     allocation_pool_end: 192.168.0.4
 
+- name: Create subnet {{ subnet_name }} on network {{ network_name }} again
+  openstack.cloud.subnet:
+    cloud: "{{ cloud }}"
+    network_name: "{{ network_name }}"
+    enable_dhcp: "{{ enable_subnet_dhcp }}"
+    name: "{{ subnet_name }}"
+    state: present
+    cidr: 192.168.0.0/24
+    gateway_ip: 192.168.0.1
+    allocation_pool_start: 192.168.0.2
+    allocation_pool_end: 192.168.0.4
+  register: idem1
+
 - name: Update subnet {{ subnet_name }} allocation pools
   openstack.cloud.subnet:
     cloud: "{{ cloud }}"
@@ -24,7 +37,7 @@
     name: "{{ subnet_name }}"
     state: present
     cidr: 192.168.0.0/24
-    allocation_pool_start: 192.168.0.5
+    allocation_pool_start: 192.168.0.2
     allocation_pool_end: 192.168.0.8
 
 - name: Get Subnet Info
@@ -36,19 +49,17 @@
 - name: Verify Subnet Allocation Pools Exist
   assert:
     that:
+      - idem1 is not changed
       - subnet_result.openstack_subnets is defined
       - subnet_result.openstack_subnets | length == 1
       - subnet_result.openstack_subnets[0].allocation_pools is defined
-      - subnet_result.openstack_subnets[0].allocation_pools | length == 2
+      - subnet_result.openstack_subnets[0].allocation_pools | length == 1
 
 - name: Verify Subnet Allocation Pools
   assert:
     that:
-      - subnet_result.openstack_subnets[0].allocation_pools | selectattr('start','equalto',item.start) | list | count > 0
-      - subnet_result.openstack_subnets[0].allocation_pools | selectattr('end','equalto',item.end) | list | count > 0
-  loop:
-    - {start: '192.168.0.2', end: '192.168.0.4'}
-    - {start: '192.168.0.5', end: '192.168.0.8'}
+      - subnet_result.openstack_subnets[0].allocation_pools.0.start ==  '192.168.0.2'
+      - subnet_result.openstack_subnets[0].allocation_pools.0.end == '192.168.0.8'
 
 - name: Delete subnet {{ subnet_name }}
   openstack.cloud.subnet:
diff --git a/plugins/modules/subnet.py b/plugins/modules/subnet.py
index eb45a4ea..73a496a5 100644
--- a/plugins/modules/subnet.py
+++ b/plugins/modules/subnet.py
@@ -207,7 +207,7 @@ def _needs_update(subnet, module, cloud, filters=None):
         return True
     if not subnet['allocation_pools'] and pool_start and pool_end:
         return True
-    if subnet['allocation_pools'] and curr_pool not in subnet['allocation_pools']:
+    if subnet['allocation_pools'] != [curr_pool]:
         return True
     if gateway_ip and subnet['gateway_ip'] != gateway_ip:
         return True
@@ -346,16 +346,14 @@ def main():
                 changed = True
             else:
                 if _needs_update(subnet, module, cloud, filters):
-                    if subnet['allocation_pools'] and pool is not None:
-                        pool = pool + subnet['allocation_pools']
-                    cloud.update_subnet(subnet['id'],
-                                        subnet_name=subnet_name,
-                                        enable_dhcp=enable_dhcp,
-                                        gateway_ip=gateway_ip,
-                                        disable_gateway_ip=no_gateway_ip,
-                                        dns_nameservers=dns,
-                                        allocation_pools=pool,
-                                        host_routes=host_routes)
+                    subnet = cloud.update_subnet(subnet['id'],
+                                                 subnet_name=subnet_name,
+                                                 enable_dhcp=enable_dhcp,
+                                                 gateway_ip=gateway_ip,
+                                                 disable_gateway_ip=no_gateway_ip,
+                                                 dns_nameservers=dns,
+                                                 allocation_pools=pool,
+                                                 host_routes=host_routes)
                     changed = True
                 else:
                     changed = False