diff --git a/src/Magnum/Platform/WindowlessGlxApplication.cpp b/src/Magnum/Platform/WindowlessGlxApplication.cpp
index b9f014a0b..9e9a0dc76 100644
--- a/src/Magnum/Platform/WindowlessGlxApplication.cpp
+++ b/src/Magnum/Platform/WindowlessGlxApplication.cpp
@@ -142,6 +142,8 @@ WindowlessGlxContext::WindowlessGlxContext(const WindowlessGlxContext::Configura
             return;
         }
     }
+    #else
+    static_cast<void>(magnumContext);
     #endif
 
     XFree(configs);