diff --git a/config_help.txt b/config_help.txt
index fb37cbaed9..63ba289941 100644
--- a/config_help.txt
+++ b/config_help.txt
@@ -277,6 +277,7 @@ Gui, printing, widget options:
                          es2 (default on Windows), desktop (default on Unix),
                          dynamic (Windows only)
   -opengles3 ........... Enable OpenGL ES 3.x support instead of ES 2.x [auto]
+  -egl ................. Enable EGL support [auto]
   -angle ............... Use bundled ANGLE to support OpenGL ES 2.0 [auto]
                          (Windows only)
   -combined-angle-lib .. Merge LibEGL and LibGLESv2 into LibANGLE (Windows only)