diff --git a/docs/envvars.html b/docs/envvars.html
index 5a988847b52..a64e2ee62db 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -100,10 +100,10 @@ See the <A HREF="xlibdriver.html">Xlib software driver page</A> for details.
 </ul>
 
 
-<h2>Radeon R300 driver environment variables (non-Gallium)</h2>
+<h2>Radeon driver environment variables (radeon, r200, and r300g)</h2>
 
 <ul>
-<li>R300_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
+<li>RADEON_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
 </ul>
 
 
diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c
index bfbf45a73fb..1f60f2ae43f 100644
--- a/src/mesa/drivers/dri/radeon/radeon_screen.c
+++ b/src/mesa/drivers/dri/radeon/radeon_screen.c
@@ -514,7 +514,7 @@ radeonCreateScreen2(__DRIscreen *sPriv)
    if (ret == -1)
      return NULL;
 
-   if (getenv("R300_NO_TCL"))
+   if (getenv("RADEON_NO_TCL"))
 	   screen->chip_flags &= ~RADEON_CHIPSET_TCL;
 
    i = 0;