diff --git a/tests/ScriptTests/ScriptTypeTests/Battle/PokemonTests.cpp b/tests/ScriptTests/ScriptTypeTests/Battle/PokemonTests.cpp
index c1a49b5..da0dbea 100644
--- a/tests/ScriptTests/ScriptTypeTests/Battle/PokemonTests.cpp
+++ b/tests/ScriptTests/ScriptTypeTests/Battle/PokemonTests.cpp
@@ -235,7 +235,7 @@ TEST_CASE("Validate Pokemon GetTypes in Script") {
         .WithForme("default")
         ->WithGender(CreatureLib::Library::Gender::Male)
         ->Build();
-    for (auto i = 0; i < mon->GetTypes().size(); i++){
+    for (size_t i = 0; i < mon->GetTypes().size(); i++){
         auto data = GetScript(mainLib, "testType");
 
         data.Context->SetArgObject(0, const_cast<PkmnLib::Battling::Pokemon*>(mon));