diff --git a/src/glsl/SConscript b/src/glsl/SConscript
index 1ea876ecb4d..a568342073c 100644
--- a/src/glsl/SConscript
+++ b/src/glsl/SConscript
@@ -72,6 +72,7 @@ sources = [
     'loop_analysis.cpp',
     'loop_controls.cpp',
     'loop_unroll.cpp',
+    'lower_noise.cpp',
     's_expression.cpp',
 ]