diff --git a/keyboard/ergodox/matrix.c b/keyboard/ergodox/matrix.c
index b75d7c57..0c5b7311 100644
--- a/keyboard/ergodox/matrix.c
+++ b/keyboard/ergodox/matrix.c
@@ -146,7 +146,6 @@ uint8_t matrix_scan(void)
 
     for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
         select_row(i);
-        _delay_us(30);  // without this wait read unstable value.
         matrix_row_t cols = read_cols(i);
         if (matrix_debouncing[i] != cols) {
             matrix_debouncing[i] = cols;
@@ -246,6 +245,7 @@ static matrix_row_t read_cols(uint8_t row)
             return data;
         }
     } else {
+        _delay_us(30);  // without this wait read unstable value.
         // read from teensy
         return
             (PINF&(1<<0) ? 0 : (1<<0)) |