diff --git a/Sources/Plasma/FeatureLib/pfAnimation/pfObjectFlocker.h b/Sources/Plasma/FeatureLib/pfAnimation/pfObjectFlocker.h
index be2360c5..29e3c42e 100644
--- a/Sources/Plasma/FeatureLib/pfAnimation/pfObjectFlocker.h
+++ b/Sources/Plasma/FeatureLib/pfAnimation/pfObjectFlocker.h
@@ -43,6 +43,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #define OBJECT_FLOCKER_H
 
 #include "pnModifier/plSingleModifier.h"
+#include <algorithm>
 
 class hsStream;
 class hsResMgr;
diff --git a/Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizationDataMgr.h b/Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizationDataMgr.h
index 4ce1175f..7b2e8c6e 100644
--- a/Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizationDataMgr.h
+++ b/Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizationDataMgr.h
@@ -51,6 +51,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 #include "HeadSpin.h"
 #include <map>
+#include <string>
 
 #include "pfLocalizedString.h"
 #include "plFileSystem.h"