diff --git a/projects/mtg/include/Subtypes.h b/projects/mtg/include/Subtypes.h
index b217e0533..9f9c27190 100644
--- a/projects/mtg/include/Subtypes.h
+++ b/projects/mtg/include/Subtypes.h
@@ -42,7 +42,7 @@ public:
     int find(string subtype, bool forceAdd = true);
     string find(unsigned int id);
     bool isSubtypeOfType(string subtype, string type);
-    bool isSubtypeOfType(unsigned int subtype, unsigned int type);
+    bool isSubtypeOfType(int subtype, int type);
     bool isSuperType(int type);
     bool isType(int type);
     bool isSubType(int type);
diff --git a/projects/mtg/src/Subtypes.cpp b/projects/mtg/src/Subtypes.cpp
index 815d0aef6..5282ffdb2 100644
--- a/projects/mtg/src/Subtypes.cpp
+++ b/projects/mtg/src/Subtypes.cpp
@@ -62,7 +62,7 @@ bool  Subtypes::isSubtypeOfType(string subtype, string type)
     unsigned int typeInt = find(type);
     return isSubtypeOfType(subtypeInt, typeInt);
 }
-bool  Subtypes::isSubtypeOfType(unsigned int subtype, unsigned int type)
+bool  Subtypes::isSubtypeOfType(int subtype, int type)
 {
     return (subtypesToType[subtype] == type);
 }