diff --git a/mediapipe/util/tracking/region_flow_computation.cc b/mediapipe/util/tracking/region_flow_computation.cc
index b6704cc61..7f67c3934 100644
--- a/mediapipe/util/tracking/region_flow_computation.cc
+++ b/mediapipe/util/tracking/region_flow_computation.cc
@@ -2096,12 +2096,6 @@ bool RegionFlowComputation::GainCorrectFrame(const cv::Mat& reference_frame,
 void RegionFlowComputation::WideBaselineMatchFeatures(
     FrameTrackingData* from_data_ptr, FrameTrackingData* to_data_ptr,
     TrackedFeatureList* results) {
-#if (defined(__ANDROID__) || defined(__APPLE__) || defined(__EMSCRIPTEN__)) && \
-    !defined(CV_WRAPPER_3X)
-  LOG(FATAL) << "Supported on only with OpenCV 3.0. "
-             << "Use bazel build flag : --define CV_WRAPPER=3X";
-#else   // (defined(__ANDROID__) || defined(__APPLE__) ||
-        // defined(__EMSCRIPTEN__)) && !defined(CV_WRAPPER_3X)
   results->clear();
 
   const auto& frame1 = from_data_ptr->frame;
@@ -2174,8 +2168,6 @@ void RegionFlowComputation::WideBaselineMatchFeatures(
       results->push_back(tracked_feature);
     }
   }
-#endif  // (defined(__ANDROID__) || defined(__APPLE__) ||
-        // defined(__EMSCRIPTEN__)) && !defined(CV_WRAPPER_3X)
 }
 
 void RegionFlowComputation::RemoveAbsentFeatures(