diff --git a/changelogs/fragments/11388-pmem-redundant-regexps.yml b/changelogs/fragments/11388-pmem-redundant-regexps.yml
new file mode 100644
index 0000000000..7f32bee927
--- /dev/null
+++ b/changelogs/fragments/11388-pmem-redundant-regexps.yml
@@ -0,0 +1,4 @@
+bugfixes:
+  - pmem - fix test for invalid data input (https://github.com/ansible-collections/community.general/pull/11388).
+minor_changes:
+  - pmem - simplify text tests without using regular expression (https://github.com/ansible-collections/community.general/pull/11388).
diff --git a/plugins/modules/pmem.py b/plugins/modules/pmem.py
index 6ea0ee4a85..52e883b9ca 100644
--- a/plugins/modules/pmem.py
+++ b/plugins/modules/pmem.py
@@ -199,7 +199,6 @@ EXAMPLES = r"""
 """
 
 import json
-import re
 import traceback
 from ansible.module_utils.basic import AnsibleModule, missing_required_lib, human_to_bytes
 
@@ -493,19 +492,17 @@ class PersistentMemory:
             return ipmctl_opts
 
         def is_allocation_good(self, ipmctl_out, command):
-            warning = re.compile("WARNING")
-            error = re.compile(".*Error.*")
-            ignore_error = re.compile("Do you want to continue? [y/n] Error: Invalid data input.")
+            ignore_error = "Do you want to continue? [y/n] Error: Invalid data input."
 
             errmsg = ""
             rc = True
             for line in ipmctl_out.splitlines():
-                if warning.match(line):
+                if line.startswith("WARNING"):
                     errmsg = f"{line} (command: {command})"
                     rc = False
                     break
-                elif error.match(line):
-                    if not ignore_error:
+                elif "Error" in line:
+                    if not line.startswith(ignore_error):
                         errmsg = f"{line} (command: {command})"
                         rc = False
                         break