diff --git a/src/x11_egl_platform.h b/src/x11_egl_platform.h
index b1fb53cb..f2fe4092 100644
--- a/src/x11_egl_platform.h
+++ b/src/x11_egl_platform.h
@@ -76,6 +76,7 @@
 #define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextEGL EGL
 #define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 X11
 #define _GLFW_PLATFORM_LIBRARY_OPENGL_STATE _GLFWlibraryEGL EGL
+#define _GLFW_CTX EGL
 
 // Clipboard format atom indices
 #define _GLFW_CLIPBOARD_FORMAT_UTF8     0
diff --git a/src/x11_platform.h b/src/x11_platform.h
index 39593655..28e749fe 100644
--- a/src/x11_platform.h
+++ b/src/x11_platform.h
@@ -85,6 +85,7 @@
 #define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextGLX GLX
 #define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 X11
 #define _GLFW_PLATFORM_LIBRARY_OPENGL_STATE _GLFWlibraryGLX GLX
+#define _GLFW_CTX GLX
 
 // Clipboard format atom indices
 #define _GLFW_CLIPBOARD_FORMAT_UTF8     0