diff --git a/src/hotspot/share/c1/c1_LIR.hpp b/src/hotspot/share/c1/c1_LIR.hpp
index 671791507f4..6cd7b97775d 100644
--- a/src/hotspot/share/c1/c1_LIR.hpp
+++ b/src/hotspot/share/c1/c1_LIR.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1016,7 +1016,7 @@ enum LIR_Code {
   , begin_opAssert
     , lir_assert
   , end_opAssert
-#ifdef INCLUDE_ZGC
+#if INCLUDE_ZGC
   , begin_opXLoadBarrierTest
     , lir_xloadbarrier_test
   , end_opXLoadBarrierTest
diff --git a/src/hotspot/share/runtime/mutexLocker.cpp b/src/hotspot/share/runtime/mutexLocker.cpp
index ab809908581..d217fd0c6f1 100644
--- a/src/hotspot/share/runtime/mutexLocker.cpp
+++ b/src/hotspot/share/runtime/mutexLocker.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -52,7 +52,7 @@ Mutex*   JvmtiThreadState_lock        = nullptr;
 Monitor* EscapeBarrier_lock           = nullptr;
 Monitor* JvmtiVTMSTransition_lock     = nullptr;
 Monitor* Heap_lock                    = nullptr;
-#ifdef INCLUDE_PARALLELGC
+#if INCLUDE_PARALLELGC
 Mutex*   PSOldGenExpand_lock      = nullptr;
 #endif
 Mutex*   AdapterHandlerLibrary_lock   = nullptr;
@@ -333,7 +333,7 @@ void mutex_init() {
   }
 
   MUTEX_DEFL(CompileTaskAlloc_lock          , PaddedMutex  ,  MethodCompileQueue_lock);
-#ifdef INCLUDE_PARALLELGC
+#if INCLUDE_PARALLELGC
   if (UseParallelGC) {
     MUTEX_DEFL(PSOldGenExpand_lock          , PaddedMutex  , Heap_lock, true);
   }
@@ -377,4 +377,3 @@ GCMutexLocker::GCMutexLocker(Mutex* mutex) {
     _mutex->lock();
   }
 }
-
diff --git a/src/hotspot/share/runtime/mutexLocker.hpp b/src/hotspot/share/runtime/mutexLocker.hpp
index b5098a6d726..598612df8f1 100644
--- a/src/hotspot/share/runtime/mutexLocker.hpp
+++ b/src/hotspot/share/runtime/mutexLocker.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -49,7 +49,7 @@ extern Mutex*   JvmtiThreadState_lock;           // a lock on modification of JV
 extern Monitor* EscapeBarrier_lock;              // a lock to sync reallocating and relocking objects because of JVMTI access
 extern Monitor* JvmtiVTMSTransition_lock;        // a lock for Virtual Thread Mount State transition (VTMS transition) management
 extern Monitor* Heap_lock;                       // a lock on the heap
-#ifdef INCLUDE_PARALLELGC
+#if INCLUDE_PARALLELGC
 extern Mutex*   PSOldGenExpand_lock;         // a lock on expanding the heap
 #endif
 extern Mutex*   AdapterHandlerLibrary_lock;      // a lock on the AdapterHandlerLibrary