diff --git a/c64/kernal/iec/iec_wait_for_clk_release.s b/c64/kernal/iec/iec_wait_for_clk_release.s
index 2464cd16..25a65bd8 100644
--- a/c64/kernal/iec/iec_wait_for_clk_release.s
+++ b/c64/kernal/iec/iec_wait_for_clk_release.s
@@ -5,9 +5,8 @@
 
 iec_wait_for_clk_release:
 
-	lda CIA2_PRA
-	and #BIT_CIA2_PRA_CLK_IN
-	beq iec_wait_for_clk_release
+	bit CIA2_PRA
+	bvc iec_wait_for_clk_release
 	rts