--- a/dom/canvas/moz.build
+++ b/dom/canvas/moz.build
@@ -63,18 +63,17 @@ UNIFIED_SOURCES += [
     'OffscreenCanvas.cpp',
 ]
 
 SOURCES += [
     'ImageUtils.cpp',
 ]
 
 # WebGL Sources
-#UNIFIED_SOURCES += [
-SOURCES += [
+UNIFIED_SOURCES += [
     'TexUnpackBlob.cpp',
     'WebGL1Context.cpp',
     'WebGL1ContextBuffers.cpp',
     'WebGL1ContextUniforms.cpp',
     'WebGL2Context.cpp',
     'WebGL2ContextBuffers.cpp',
     'WebGL2ContextDraw.cpp',
     'WebGL2ContextFramebuffers.cpp',