--- a/dom/canvas/WebGL2ContextBuffers.cpp
+++ b/dom/canvas/WebGL2ContextBuffers.cpp
@@ -14,22 +14,22 @@ namespace mozilla {
 bool
 WebGL2Context::ValidateBufferTarget(GLenum target, const char* info)
 {
     switch (target) {
     case LOCAL_GL_ARRAY_BUFFER:
     case LOCAL_GL_COPY_READ_BUFFER:
     case LOCAL_GL_COPY_WRITE_BUFFER:
     case LOCAL_GL_ELEMENT_ARRAY_BUFFER:
+    case LOCAL_GL_PIXEL_UNPACK_BUFFER:
     case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
     case LOCAL_GL_UNIFORM_BUFFER:
         return true;
 
     case LOCAL_GL_PIXEL_PACK_BUFFER:
-    case LOCAL_GL_PIXEL_UNPACK_BUFFER:
         ErrorInvalidOperation("%s: PBOs are still under development, and are currently"
                               " disabled.",
                               info);
         return false;
 
     default:
         ErrorInvalidEnumInfo(info, target);
         return false;