diff --git a/src/script/squirrel.hpp b/src/script/squirrel.hpp
--- a/src/script/squirrel.hpp
+++ b/src/script/squirrel.hpp
@@ -13,9 +13,9 @@
 #include <squirrel.h>
 
 /** The type of script we're working with, i.e. for who is it? */
-enum ScriptType {
-	ST_AI, ///< The script is for AI scripts.
-	ST_GS, ///< The script is for Game scripts.
+enum class ScriptType {
+	AI, ///< The script is for AI scripts.
+	GS, ///< The script is for Game scripts.
 };
 
 struct ScriptAllocator;