diff --git a/Gems/GradientSignal/Code/Tests/GradientSignalTestFixtures.h b/Gems/GradientSignal/Code/Tests/GradientSignalTestFixtures.h
index c45af43ad9..4d2233528b 100644
--- a/Gems/GradientSignal/Code/Tests/GradientSignalTestFixtures.h
+++ b/Gems/GradientSignal/Code/Tests/GradientSignalTestFixtures.h
@@ -90,7 +90,7 @@ namespace UnitTest
         AZStd::unique_ptr<AZ::Entity> BuildTestSurfaceMaskGradient(float shapeHalfBounds);
         AZStd::unique_ptr<AZ::Entity> BuildTestSurfaceSlopeGradient(float shapeHalfBounds);
 
-        AZ::RPI::AssetHandlerPtrList m_assetHandlers;
+        AZStd::fixed_vector<AZStd::unique_ptr<AZ::Data::AssetHandler>, 2> m_assetHandlers;
     };
 
     struct GradientSignalTest