diff --git a/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp b/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp
index 5a6c645a510670..4340f683b0d666 100644
--- a/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp
+++ b/src/app/clusters/operational-credentials-server/operational-credentials-server.cpp
@@ -654,9 +654,10 @@ bool emberAfOperationalCredentialsClusterAddNOCCallback(app::CommandHandler * co
 
     // Set the Identity Protection Key (IPK)
     // The IPK SHALL be the operational group key under GroupKeySetID of 0
-    keyset.keyset_id     = Credentials::GroupDataProvider::kIdentityProtectionKeySetId;
-    keyset.policy        = GroupKeyManagement::GroupKeySecurityPolicyEnum::kTrustFirst;
-    keyset.num_keys_used = 1;
+    keyset.keyset_id                = Credentials::GroupDataProvider::kIdentityProtectionKeySetId;
+    keyset.policy                   = GroupKeyManagement::GroupKeySecurityPolicyEnum::kTrustFirst;
+    keyset.num_keys_used            = 1;
+    keyset.epoch_keys[0].start_time = 0;
     memcpy(keyset.epoch_keys[0].key, ipkValue.data(), Crypto::CHIP_CRYPTO_SYMMETRIC_KEY_LENGTH_BYTES);
 
     err = newFabricInfo->GetCompressedFabricIdBytes(compressed_fabric_id);
diff --git a/src/credentials/GroupDataProvider.h b/src/credentials/GroupDataProvider.h
index 6684d4bea9cfd0..71e55e0e550cd3 100644
--- a/src/credentials/GroupDataProvider.h
+++ b/src/credentials/GroupDataProvider.h
@@ -121,7 +121,7 @@ class GroupDataProvider
     {
         static constexpr size_t kLengthBytes = Crypto::CHIP_CRYPTO_SYMMETRIC_KEY_LENGTH_BYTES;
         // Validity start time in microseconds since 2000-01-01T00:00:00 UTC ("the Epoch")
-        uint64_t start_time = 0;
+        uint64_t start_time;
         // Actual key bits. Depending on context, it may be a raw epoch key (as seen within `SetKeySet` calls)
         // or it may be the derived operational group key (as seen in any other usage).
         uint8_t key[kLengthBytes];
@@ -202,7 +202,7 @@ class GroupDataProvider
     virtual ~GroupDataProvider() = default;
 
     // Not copyable
-    GroupDataProvider(const GroupDataProvider &) = delete;
+    GroupDataProvider(const GroupDataProvider &)             = delete;
     GroupDataProvider & operator=(const GroupDataProvider &) = delete;
 
     uint16_t GetMaxGroupsPerFabric() const { return mMaxGroupsPerFabric; }