diff --git a/keyboards/handwired/dactyl/matrix.c b/keyboards/handwired/dactyl/matrix.c
index 0f4f98ad8..615621522 100644
--- a/keyboards/handwired/dactyl/matrix.c
+++ b/keyboards/handwired/dactyl/matrix.c
@@ -130,7 +130,7 @@ void matrix_init(void)
 void init_expander(void) {
     if (! i2c_initialized) {
         i2c_init();
-        wait_us(1000000);
+        wait_ms(1000);
     }
 
     if (! expander_input_pin_mask) {
diff --git a/keyboards/handwired/pterodactyl/matrix.c b/keyboards/handwired/pterodactyl/matrix.c
index 507f640bd..21e6a128d 100644
--- a/keyboards/handwired/pterodactyl/matrix.c
+++ b/keyboards/handwired/pterodactyl/matrix.c
@@ -143,7 +143,7 @@ void matrix_init(void)
 void init_expander(void) {
     if (! i2c_initialized) {
         i2c_init();
-        wait_us(1000000);
+        wait_ms(1000);
     }
 
     if (! expander_input_pin_mask) {