diff --git a/util/bigint/src/uint.rs b/util/bigint/src/uint.rs
index 330d20e36..1a23ad085 100644
--- a/util/bigint/src/uint.rs
+++ b/util/bigint/src/uint.rs
@@ -354,7 +354,7 @@ macro_rules! uint_overflowing_mul {
 				mov $12, %rcx
 				jrcxz 11f
 
-				movt $7, %rcx
+				mov $7, %rcx
 				mov $6, %rax
 				add %rax, %rcx