diff --git a/crates/core_arch/src/x86/gfni.rs b/crates/core_arch/src/x86/gfni.rs
index 74e8c53c28..8c4d097fee 100644
--- a/crates/core_arch/src/x86/gfni.rs
+++ b/crates/core_arch/src/x86/gfni.rs
@@ -745,7 +745,6 @@ mod tests {
     #![allow(overflowing_literals)]
 
     use core::hint::black_box;
-    use core::intrinsics::size_of;
     use stdarch_test::simd_test;
 
     use crate::core_arch::x86::*;