diff --git a/src/Trade/AbstractMaterialData.cpp b/src/Trade/AbstractMaterialData.cpp
index d62afcf40..7df183d61 100644
--- a/src/Trade/AbstractMaterialData.cpp
+++ b/src/Trade/AbstractMaterialData.cpp
@@ -24,10 +24,22 @@
 
 #include "AbstractMaterialData.h"
 
+#include <Utility/Debug.h>
+
 namespace Magnum { namespace Trade {
 
 AbstractMaterialData::AbstractMaterialData(Type type): _type(type) {}
 
 AbstractMaterialData::~AbstractMaterialData() {}
 
+Debug operator<<(Debug debug, const AbstractMaterialData::Type value) {
+    switch(value) {
+        #define _c(value) case AbstractMaterialData::Type::value: return debug << "Trade::AbstractMaterialData::Type::" #value;
+        _c(Phong)
+        #undef _c
+    }
+
+    return debug << "Trade::AbstractMaterialData::Type::(unknown)";
+}
+
 }}
diff --git a/src/Trade/AbstractMaterialData.h b/src/Trade/AbstractMaterialData.h
index e737c57da..2cf22eddf 100644
--- a/src/Trade/AbstractMaterialData.h
+++ b/src/Trade/AbstractMaterialData.h
@@ -29,7 +29,7 @@
  */
 
 #include "magnumVisibility.h"
-#include "Types.h"
+#include "Magnum.h"
 
 namespace Magnum { namespace Trade {
 
@@ -73,6 +73,9 @@ class MAGNUM_EXPORT AbstractMaterialData {
         Type _type;
 };
 
+/** @debugoperator{Magnum::Trade::AbstractMaterialData} */
+Debug MAGNUM_EXPORT operator<<(Debug debug, AbstractMaterialData::Type value);
+
 }}
 
 #endif
diff --git a/src/Trade/Test/AbstractMaterialDataTest.cpp b/src/Trade/Test/AbstractMaterialDataTest.cpp
new file mode 100644
index 000000000..be2ab6ec8
--- /dev/null
+++ b/src/Trade/Test/AbstractMaterialDataTest.cpp
@@ -0,0 +1,52 @@
+/*
+    This file is part of Magnum.
+
+    Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz>
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included
+    in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+*/
+
+#include <sstream>
+#include <TestSuite/Tester.h>
+
+#include "Trade/AbstractMaterialData.h"
+
+namespace Magnum { namespace Trade { namespace Test {
+
+class AbstractMaterialDataTest: public TestSuite::Tester {
+    public:
+        explicit AbstractMaterialDataTest();
+
+        void debug();
+};
+
+AbstractMaterialDataTest::AbstractMaterialDataTest() {
+    addTests({&AbstractMaterialDataTest::debug});
+}
+
+void AbstractMaterialDataTest::debug() {
+    std::ostringstream out;
+
+    Debug(&out) << AbstractMaterialData::Type::Phong;
+    CORRADE_COMPARE(out.str(), "Trade::AbstractMaterialData::Type::Phong\n");
+}
+
+}}}
+
+CORRADE_TEST_MAIN(Magnum::Trade::Test::AbstractMaterialDataTest)
diff --git a/src/Trade/Test/CMakeLists.txt b/src/Trade/Test/CMakeLists.txt
index beb1c2ccf..9efdaffeb 100644
--- a/src/Trade/Test/CMakeLists.txt
+++ b/src/Trade/Test/CMakeLists.txt
@@ -29,6 +29,7 @@ include_directories(${CMAKE_CURRENT_BINARY_DIR})
 
 corrade_add_test(TradeAbstractImageConverterTest AbstractImageConverterTest.cpp LIBRARIES Magnum)
 corrade_add_test(TradeAbstractImporterTest AbstractImporterTest.cpp LIBRARIES Magnum)
+corrade_add_test(TradeAbstractMaterialDataTest AbstractMaterialDataTest.cpp LIBRARIES Magnum)
 corrade_add_test(TradeImageDataTest ImageDataTest.cpp LIBRARIES Magnum)
 corrade_add_test(TradeObjectData2DTest ObjectData2DTest.cpp LIBRARIES Magnum)
 corrade_add_test(TradeObjectData3DTest ObjectData3DTest.cpp LIBRARIES Magnum)