diff --git a/src/kaleidoscope/hardware/technomancy/Atreus.cpp b/src/kaleidoscope/hardware/technomancy/Atreus.cpp
index 1cc441dd..e41e3677 100644
--- a/src/kaleidoscope/hardware/technomancy/Atreus.cpp
+++ b/src/kaleidoscope/hardware/technomancy/Atreus.cpp
@@ -70,22 +70,6 @@ void Atreus::resetDevice() {
   asm volatile("jmp 0x7E00");
 }
 
-uint16_t Atreus::readCols() {
-  uint16_t results = 0;
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[0]) << 0);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[1]) << 1);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[2]) << 2);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[3]) << 3);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[4]) << 4);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[5]) << 5);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[6]) << 6);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[7]) << 7);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[8]) << 8);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[9]) << 9);
-  results |= (!READ_PIN(KeyboardHardware.matrix_col_pins[10]) << 10);
-
-  return results;
-}
 
 }
 }
diff --git a/src/kaleidoscope/hardware/technomancy/Atreus.h b/src/kaleidoscope/hardware/technomancy/Atreus.h
index 1ac4c393..d4f0821b 100644
--- a/src/kaleidoscope/hardware/technomancy/Atreus.h
+++ b/src/kaleidoscope/hardware/technomancy/Atreus.h
@@ -52,7 +52,6 @@ class Atreus: public kaleidoscope::hardware::ATMegaKeyboard {
   void resetDevice();
 
  protected:
-  uint16_t readCols();
 };
 
 #define KEYMAP(                                                               \