diff --git a/Double-Lo-Res-Graphics.md b/Double-Lo-Res-Graphics.md
index d441898..e3c016f 100644
--- a/Double-Lo-Res-Graphics.md
+++ b/Double-Lo-Res-Graphics.md
@@ -27,6 +27,6 @@ dgrLine(buff, x1, y1, x2, y2)#0
 dgrClear(buff, clr)#0
 ```
 
-**Source Code:** [`dgr.pla`](https://github.com/dschmenk/PLASMA/blob/master/src/libsrc/apple/dgr.pla)
+**Source Code:** [`dgrlib.pla`](https://github.com/dschmenk/PLASMA/blob/master/src/libsrc/apple/dgrlib.pla)
 
 **Sample Source:** [`dgrtest.pla`](https://github.com/dschmenk/PLASMA/blob/master/src/samplesrc/dgrtest.pla)
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