diff --git a/lib/led-matrix.cc b/lib/led-matrix.cc
index 6c89fcaec..3ccf3f6e3 100644
--- a/lib/led-matrix.cc
+++ b/lib/led-matrix.cc
@@ -93,7 +93,6 @@ class RGBMatrix::Impl {
   uint64_t RequestOutputs(uint64_t output_bits);
   void OutputGPIO(uint64_t output_bits);
 
-  void Clear();
 private:
   friend class RGBMatrix;