diff --git a/src/Magnum/Platform/GlfwApplication.cpp b/src/Magnum/Platform/GlfwApplication.cpp
index 9ffd0e0f7..cfe74d164 100644
--- a/src/Magnum/Platform/GlfwApplication.cpp
+++ b/src/Magnum/Platform/GlfwApplication.cpp
@@ -527,7 +527,9 @@ bool GlfwApplication::tryCreate(const Configuration& configuration, const GLConf
         glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
         glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 1);
         glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_ANY_PROFILE);
-        /** @todo or keep the fwcompat? */
+        /* Discard the ForwardCompatible flag for the fallback. Having it set
+           makes the fallback context creation fail on Mesa's Zink (which is
+           just 2.1) and I assume on others as well. */
         glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, false);
 
         _window = glfwCreateWindow(scaledWindowSize.x(), scaledWindowSize.y(), configuration.title().c_str(), monitor, nullptr);
diff --git a/src/Magnum/Platform/Sdl2Application.cpp b/src/Magnum/Platform/Sdl2Application.cpp
index b0e2f0e11..e65b5aa2b 100644
--- a/src/Magnum/Platform/Sdl2Application.cpp
+++ b/src/Magnum/Platform/Sdl2Application.cpp
@@ -572,7 +572,9 @@ bool Sdl2Application::tryCreate(const Configuration& configuration, const GLConf
         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
         SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
         SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY);
-        /** @todo or keep the fwcompat? */
+        /* Discard the ForwardCompatible flag for the fallback. Having it set
+           makes the fallback context creation fail on Mesa's Zink (which is
+           just 2.1) and I assume on others as well. */
         SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, int(glFlags) & int(~GLConfiguration::Flag::ForwardCompatible));
 
         if(!(_window = SDL_CreateWindow(configuration.title().data(),
diff --git a/src/Magnum/Platform/WindowlessGlxApplication.cpp b/src/Magnum/Platform/WindowlessGlxApplication.cpp
index adccf2ae9..56db047a8 100644
--- a/src/Magnum/Platform/WindowlessGlxApplication.cpp
+++ b/src/Magnum/Platform/WindowlessGlxApplication.cpp
@@ -149,7 +149,10 @@ WindowlessGlxContext::WindowlessGlxContext(const WindowlessGlxContext::Configura
         }
 
         const GLint fallbackContextAttributes[] = {
-            GLX_CONTEXT_FLAGS_ARB, GLint(flags),
+            /* Discard the ForwardCompatible flag for the fallback. Having it
+               set makes the fallback context creation fail on Mesa's Zink
+               (which is just 2.1) and I assume on others as well. */
+            GLX_CONTEXT_FLAGS_ARB, GLint(flags & ~Configuration::Flag::ForwardCompatible),
             0
         };
         {
@@ -188,7 +191,10 @@ WindowlessGlxContext::WindowlessGlxContext(const WindowlessGlxContext::Configura
             /* Destroy the core context and create a compatibility one */
             glXDestroyContext(_display, _context);
             const GLint fallbackContextAttributes[] = {
-                /** @todo keep the fwcompat? */
+                /* Discard the ForwardCompatible flag for the fallback.
+                   Compared to the above case of a 2.1 fallback it's not really
+                   needed here (AFAIK it works in both cases), but let's be
+                   consistent. */
                 GLX_CONTEXT_FLAGS_ARB, GLint(flags & ~Configuration::Flag::ForwardCompatible),
                 0
             };