diff --git a/doc/changelog.dox b/doc/changelog.dox
index a0b0cac54..e6ff4b5bb 100644
--- a/doc/changelog.dox
+++ b/doc/changelog.dox
@@ -157,6 +157,14 @@ See also:
     statelessness when doing batch processing. Use the
     @ref TextureTools::DistanceField class instead.
 
+@subsection changelog-latest-compatibility Potential compatibility breakages, removed APIs
+
+-   Removed the `Magnum/Test/AbstractOpenGLTester.h` header that was deprecated
+    in January 2017. Use @ref Magnum/GL/OpenGLTester.h and the
+    @ref GL::OpenGLTester library instead. Note that the deprecated
+    `Magnum/OpenGLTester.h` header is still present, along with all other
+    deprecated GL-specific headers and APIs in the project root.
+
 @section changelog-2018-10 2018.10
 
 Released 2018-10-23, tagged as
diff --git a/src/Magnum/GL/CMakeLists.txt b/src/Magnum/GL/CMakeLists.txt
index aa1c32b71..253539975 100644
--- a/src/Magnum/GL/CMakeLists.txt
+++ b/src/Magnum/GL/CMakeLists.txt
@@ -244,14 +244,10 @@ if(WITH_OPENGLTESTER)
 
     set(MagnumOpenGLTester_SRCS OpenGLTester.cpp)
     set(MagnumOpenGLTester_HEADERS OpenGLTester.h)
-    if(BUILD_DEPRECATED)
-        set(MagnumOpenGLTester_DEPRECATED_HEADERS ../Test/AbstractOpenGLTester.h)
-    endif()
 
     add_library(MagnumOpenGLTester STATIC
         ${MagnumOpenGLTester_SRCS}
-        ${MagnumOpenGLTester_HEADERS}
-        ${MagnumOpenGLTester_DEPRECATED_HEADERS}) # TODO: remove when the header is removed
+        ${MagnumOpenGLTester_HEADERS})
     set_target_properties(MagnumOpenGLTester PROPERTIES
         DEBUG_POSTFIX "-d"
         FOLDER "Magnum/GL")
diff --git a/src/Magnum/Test/AbstractOpenGLTester.h b/src/Magnum/Test/AbstractOpenGLTester.h
deleted file mode 100644
index dc573b5a8..000000000
--- a/src/Magnum/Test/AbstractOpenGLTester.h
+++ /dev/null
@@ -1,81 +0,0 @@
-#ifndef Magnum_Test_AbstractOpenGLTester_h
-#define Magnum_Test_AbstractOpenGLTester_h
-/*
-    This file is part of Magnum.
-
-    Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
-              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 "Magnum/OpenGLTester.h"
-#ifdef MAGNUM_BUILD_DEPRECATED
-CORRADE_DEPRECATED_FILE("use Magnum/OpenGLTester.h and Magnum::OpenGLTester library instead")
-
-#include "Magnum/Context.h"
-#include "Magnum/Extensions.h"
-#include "Magnum/DebugOutput.h"
-
-namespace Magnum { namespace Test {
-
-class AbstractOpenGLTester: public TestSuite::Tester {
-    public:
-        /* Deprecating the class doesn't make GCC print the warnings :( */
-        explicit CORRADE_DEPRECATED("use OpenGLTester instead") AbstractOpenGLTester();
-
-    private:
-        struct WindowlessApplication: Platform::WindowlessApplication {
-            explicit WindowlessApplication(const Arguments& arguments): Platform::WindowlessApplication{arguments, NoCreate} {}
-            int exec() override final { return 0; }
-
-            using Platform::WindowlessApplication::tryCreateContext;
-            using Platform::WindowlessApplication::createContext;
-
-        } _windowlessApplication;
-};
-
-AbstractOpenGLTester::AbstractOpenGLTester(): TestSuite::Tester{TestSuite::Tester::TesterConfiguration{}.setSkippedArgumentPrefixes({"magnum"})}, _windowlessApplication{{arguments().first, arguments().second}} {
-    /* Try to create debug context, fallback to normal one if not possible. No
-       such thing on macOS or iOS. */
-    #ifndef CORRADE_TARGET_APPLE
-    if(!_windowlessApplication.tryCreateContext(Platform::WindowlessApplication::Configuration{}.setFlags(Platform::WindowlessApplication::Configuration::Flag::Debug)))
-        _windowlessApplication.createContext();
-    #else
-    _windowlessApplication.createContext();
-    #endif
-
-    if(Context::current().isExtensionSupported<Extensions::GL::KHR::debug>()) {
-        Renderer::enable(Renderer::Feature::DebugOutput);
-        Renderer::enable(Renderer::Feature::DebugOutputSynchronous);
-        DebugOutput::setDefaultCallback();
-
-        /* Disable "Buffer detailed info" message on NV (too spammy) */
-        DebugOutput::setEnabled(DebugOutput::Source::Api, DebugOutput::Type::Other, {131185}, false);
-    }
-}
-
-#define MAGNUM_GL_TEST_MAIN(Class) CORRADE_TEST_MAIN(Class)
-#else
-#error use Magnum/OpenGLTester.h and Magnum::OpenGLTester library instead
-#endif
-
-}}
-
-#endif