diff --git a/main.c b/main.c
index aab1f09..3e770ce 100644
--- a/main.c
+++ b/main.c
@@ -54,7 +54,7 @@ static bool ram_cpy() {
 static void wait_10us(uint32_t us10)
 {
 	us10 = ((us10 / (1 << CLK->CKDIVR.fields.HSIDIV)) * 1000) / 206; // calibrated for 1 ms
-	for (volatile uint32_t t = 0; t < us10; t++); // burn energy
+	while (us10--); // burn energy
 }
 
 // verify (E-)EDID checksums