diff --git a/src/x11/x11_init.c b/src/x11/x11_init.c
index c287e6da..a382bda6 100644
--- a/src/x11/x11_init.c
+++ b/src/x11/x11_init.c
@@ -157,6 +157,7 @@ static void initGammaRamp(void)
             // This is probably Nvidia RandR with broken gamma support
             // Flag it as useless and try Xf86VidMode below, if available
             _glfwLibrary.X11.XRandR.gammaBroken = GL_TRUE;
+            fprintf(stderr, "Ignoring broken nVidia implementation of RandR 1.2+ gamma\n");
         }
 
         XRRFreeScreenResources(rr);