diff --git a/src/PowderToyRenderer.cpp b/src/PowderToyRenderer.cpp
index ad9c2d4f4..e5714ea40 100644
--- a/src/PowderToyRenderer.cpp
+++ b/src/PowderToyRenderer.cpp
@@ -64,6 +64,10 @@ int main(int argc, char *argv[])
 	ByteString ppmFilename, ptiFilename, ptiSmallFilename, pngFilename, pngSmallFilename;
 	std::vector<char> ppmFile, ptiFile, ptiSmallFile, pngFile, pngSmallFile;
 
+	if (!argv[1] || !argv[2]) {
+		std::cout << "Usage: " << argv[0] << " <inputFilename> <outputPrefix>" << std::endl;
+		return 1;
+	}
 	inputFilename = argv[1];
 	outputPrefix = argv[2];
 
diff --git a/src/graphics/Renderer.cpp b/src/graphics/Renderer.cpp
index 1b79994ce..dd59c3139 100644
--- a/src/graphics/Renderer.cpp
+++ b/src/graphics/Renderer.cpp
@@ -2940,7 +2940,7 @@ unsigned int Renderer::GetColourMode()
 
 void Renderer::ResetModes()
 {
-	SetRenderMode({ RENDER_BASC, RENDER_FIRE, RENDER_SPRK });
+	SetRenderMode({ RENDER_BASC, RENDER_FIRE, RENDER_SPRK, RENDER_EFFE });
 	SetDisplayMode({ });
 	SetColourMode(COLOUR_DEFAULT);
 }