diff --git a/CMakeLists.txt b/CMakeLists.txt
index 08e63fae74..942470fb4c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -786,7 +786,7 @@ if(NULLGL)
     src/glview/Renderer.cc
     src/glview/NULLGL.cc # contains several 'nullified' versions of above .cc files
     src/glview/OffscreenView.cc
-    src/glview/offscreen-old/OffscreenContextNULL.cc
+    src/glview/OffscreenContextNULL.cc
     src/io/export_png.cc
     src/io/imageutils.cc
     ${OFFSCREEN_IMGUTILS_SOURCE})