diff --git a/scripts/py_matter_idl/matter_idl/tests/inputs/large_all_clusters_app.matter b/scripts/py_matter_idl/matter_idl/tests/inputs/large_all_clusters_app.matter
index 32eac2423ee3da..47810281dfd37f 100644
--- a/scripts/py_matter_idl/matter_idl/tests/inputs/large_all_clusters_app.matter
+++ b/scripts/py_matter_idl/matter_idl/tests/inputs/large_all_clusters_app.matter
@@ -720,7 +720,7 @@ server cluster OtaSoftwareUpdateRequestor = 42 {
   readonly attribute bitmap32 featureMap = 65532;
   readonly attribute int16u clusterRevision = 65533;
 
-  request struct AnnounceOTAProviderRequest {
+  request struct AnnounceOtaProviderRequest {
     node_id providerNodeId = 0;
     vendor_id vendorId = 1;
     OTAAnnouncementReason announcementReason = 2;
@@ -728,7 +728,7 @@ server cluster OtaSoftwareUpdateRequestor = 42 {
     endpoint_no endpoint = 4;
   }
 
-  command AnnounceOTAProvider(AnnounceOtaProviderRequest): DefaultSuccess = 0;
+  command AnnounceOtaProvider(AnnounceOtaProviderRequest): DefaultSuccess = 0;
 }
 
 server cluster LocalizationConfiguration = 43 {
diff --git a/scripts/py_matter_idl/matter_idl/tests/inputs/large_lighting_app.matter b/scripts/py_matter_idl/matter_idl/tests/inputs/large_lighting_app.matter
index 5ebc3616898784..67b2390fe614b7 100644
--- a/scripts/py_matter_idl/matter_idl/tests/inputs/large_lighting_app.matter
+++ b/scripts/py_matter_idl/matter_idl/tests/inputs/large_lighting_app.matter
@@ -515,7 +515,7 @@ server cluster OtaSoftwareUpdateRequestor = 42 {
   readonly attribute bitmap32 featureMap = 65532;
   readonly attribute int16u clusterRevision = 65533;
 
-  request struct AnnounceOTAProviderRequest {
+  request struct AnnounceOtaProviderRequest {
     node_id providerNodeId = 0;
     vendor_id vendorId = 1;
     OTAAnnouncementReason announcementReason = 2;
@@ -523,7 +523,7 @@ server cluster OtaSoftwareUpdateRequestor = 42 {
     endpoint_no endpoint = 4;
   }
 
-  command AnnounceOTAProvider(AnnounceOtaProviderRequest): DefaultSuccess = 0;
+  command AnnounceOtaProvider(AnnounceOtaProviderRequest): DefaultSuccess = 0;
 }
 
 server cluster LocalizationConfiguration = 43 {