2 files changed, 5 insertions, 5 deletions
diff --git a/engines/wintermute/system/sys_class.cpp b/engines/wintermute/system/sys_class.cpp
index 06b36b84de..cda58bbb48 100644
--- a/engines/wintermute/system/sys_class.cpp
+++ b/engines/wintermute/system/sys_class.cpp
@@ -41,7 +41,7 @@ SystemClass::SystemClass(const AnsiString &name, PERSISTBUILD build, PERSISTLOAD
 
 	_build = build;
 	_load = load;
-	_next = NULL;
+	_next = nullptr;
 	_savedID = -1;
 	_persistent = persistentClass;
 	_numInst = 0;
@@ -119,7 +119,7 @@ void *SystemClass::idToPointer(int savedID) {
 			return (it->_value)->getInstance();
 		}
 	}
-	return NULL;
+	return nullptr;
 }
 
 //////////////////////////////////////////////////////////////////////////
diff --git a/engines/wintermute/system/sys_class_registry.cpp b/engines/wintermute/system/sys_class_registry.cpp
index 7c1911c2bf..3e2b8665ee 100644
--- a/engines/wintermute/system/sys_class_registry.cpp
+++ b/engines/wintermute/system/sys_class_registry.cpp
@@ -115,7 +115,7 @@ bool SystemClassRegistry::registerInstance(const char *className, void *instance
 	}
 
 	SystemInstance *inst = (*mapIt)._value->addInstance(instance, _count++);
-	return (inst != NULL);
+	return (inst != nullptr);
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -152,7 +152,7 @@ bool SystemClassRegistry::unregisterInstance(const char *className, void *instan
 
 //////////////////////////////////////////////////////////////////////////
 bool SystemClassRegistry::getPointerID(void *pointer, int *classID, int *instanceID) {
-	if (pointer == NULL) {
+	if (pointer == nullptr) {
 		return true;
 	}
 
@@ -173,7 +173,7 @@ bool SystemClassRegistry::getPointerID(void *pointer, int *classID, int *instanc
 void *SystemClassRegistry::idToPointer(int classID, int instanceID) {
 	SavedInstanceMap::iterator it = _savedInstanceMap.find(instanceID);
 	if (it == _savedInstanceMap.end()) {
-		return NULL;
+		return nullptr;
 	} else {
 		return (*it)._value->getInstance();
 	}