diff --git a/CInterface/Core.cpp b/CInterface/Core.cpp
index b8aaaa8..70b51cf 100644
--- a/CInterface/Core.cpp
+++ b/CInterface/Core.cpp
@@ -1,4 +1,4 @@
 #include "Core.hpp"
 
-std::string ExceptionHandler::_lastException = "";
+std::string ExceptionHandler::_pkmnLibLastException = "";
 export const char* PkmnLib_C_GetLastException() { return ExceptionHandler::GetLastException(); }
\ No newline at end of file
diff --git a/CInterface/Core.hpp b/CInterface/Core.hpp
index 780c678..fc57421 100644
--- a/CInterface/Core.hpp
+++ b/CInterface/Core.hpp
@@ -6,15 +6,14 @@
 #include <string>
 #define export extern "C"
 
-// CreatureLibException is 1, so use 2.
-#define PkmnLibException 2
+#define PkmnLibException 4
 
 class ExceptionHandler {
-    static std::string _lastException;
+    static std::string _pkmnLibLastException;
 
 public:
-    static void SetLastException(const std::exception& e) { _lastException = std::string(e.what()); }
-    static const char* GetLastException() { return _lastException.c_str(); }
+    static void SetLastException(const std::exception& e) { _pkmnLibLastException = std::string(e.what()); }
+    static const char* GetLastException() { return _pkmnLibLastException.c_str(); }
 };
 
 #define Try(data)                                                                                                      \