diff --git a/browser/Makefile.am b/browser/Makefile.am
index 2e8d663f6..d52c3f286 100644
--- a/browser/Makefile.am
+++ b/browser/Makefile.am
@@ -237,11 +237,9 @@ COOL_JS_LST =\
 	src/layer/vector/CanvasOverlay.ts \
 	src/layer/tile/ScrollSection.ts \
 	src/layer/tile/CanvasTileLayer.js \
-	src/layer/SplitPanesContext.ts \
 	src/layer/vector/CDarkOverlay.ts \
 	src/layer/SplitPanesContext.ts \
 	src/layer/CalcSplitPanesContext.ts \
-	src/layer/vector/CDarkOverlay.ts \
 	src/layer/tile/TileLayer.TableOverlay.js \
 	src/layer/tile/WriterTileLayer.js \
 	src/layer/tile/ImpressTileLayer.js \