diff --git a/src/threading/SerializationTypes.h b/src/threading/SerializationTypes.h
index 11ceda929c..8f36402637 100644
--- a/src/threading/SerializationTypes.h
+++ b/src/threading/SerializationTypes.h
@@ -1,6 +1,6 @@
 
 #ifndef THREADING_SERIALIZATIONTYPES_H
-#define THREADING_SERIALIZATIONTZPES_H
+#define THREADING_SERIALIZATIONTYPES_H
 
 #include "../RemoteSerializer.h"