diff --git a/projects/mtg/src/Subtypes.cpp b/projects/mtg/src/Subtypes.cpp
index 05eb2858f..a23ead76c 100644
--- a/projects/mtg/src/Subtypes.cpp
+++ b/projects/mtg/src/Subtypes.cpp
@@ -65,8 +65,9 @@ string Subtypes::find(unsigned int id)
 
 bool  Subtypes::isSubtypeOfType(unsigned int subtype, unsigned int type)
 {
-    if(subtype >= size_t(subtypesToType.size()))
+    if((size_t)subtype >= subtypesToType.size())
         return false;
+
     return (subtypesToType[subtype] == type);
 }