diff --git a/Sources/Plasma/FeatureLib/pfMetalPipeline/plMetalDeviceLibraryLoader.mm b/Sources/Plasma/FeatureLib/pfMetalPipeline/plMetalDeviceLibraryLoader.mm
index 2c57847119..3237859929 100644
--- a/Sources/Plasma/FeatureLib/pfMetalPipeline/plMetalDeviceLibraryLoader.mm
+++ b/Sources/Plasma/FeatureLib/pfMetalPipeline/plMetalDeviceLibraryLoader.mm
@@ -57,4 +57,5 @@
         NSURL* shaderURL = [NSBundle.mainBundle URLForResource:@"pfMetalPipelineShadersMSL21" withExtension:@"metallib"];
         fShaderLibrary = fMetalDevice->newLibrary(static_cast<NS::URL*>(shaderURL), &error);
     }
+    hsAssert(error == nil,  "Unexpected error loading Metal shader library");
 }