diff --git a/mediapipe/calculators/image/sobel_edges_calculator.cc b/mediapipe/calculators/image/sobel_edges_calculator.cc
index 6154a246b..cf090a172 100644
--- a/mediapipe/calculators/image/sobel_edges_calculator.cc
+++ b/mediapipe/calculators/image/sobel_edges_calculator.cc
@@ -185,7 +185,6 @@ absl::Status SobelEdgesCalculator::GlRender(const GlTexture& src,
 
   // program
   glUseProgram(program_);
-  glUniform1i(frame_, 1);
 
   // parameters
   glUniform1i(frame_, 1);