diff --git a/src/QR.cpp b/src/QR.cpp
index 7cee284..5be5764 100644
--- a/src/QR.cpp
+++ b/src/QR.cpp
@@ -31,7 +31,7 @@ void QR::render(Format format) {
 		case Format::SVG     : this->renderTyped<SVGRenderer>(); break;
 		case Format::JPG     : this->renderTyped<JPGRenderer>(); break;
 		case Format::BMP     : this->renderTyped<BMPRenderer>(); break;
-		case Format::END     : break;
+		UNUSED_CASE(Format::END);
 	}
 }
 
diff --git a/src/QR.hpp b/src/QR.hpp
index edcc80d..df9f4e7 100644
--- a/src/QR.hpp
+++ b/src/QR.hpp
@@ -6,6 +6,8 @@
 #include "qrcodegen.hpp"
 #include "Renderer.hpp"
 
+#define UNUSED_CASE(name) case name: break; 
+
 namespace massivedynamic {
 	typedef uint32_t Color;