diff --git a/src/unix/linux_like/linux/gnu/b64/s390x.rs b/src/unix/linux_like/linux/gnu/b64/s390x.rs
index c08e12108b918..18684de36dc52 100644
--- a/src/unix/linux_like/linux/gnu/b64/s390x.rs
+++ b/src/unix/linux_like/linux/gnu/b64/s390x.rs
@@ -235,7 +235,7 @@ cfg_if! {
 
         impl hash::Hash for fpreg_t {
             fn hash<H: hash::Hasher>(&self, state: &mut H) {
-                let d: u64 = unsafe { mem::transmute(self.d) };
+                let d: u64 = self.d.to_bits();
                 d.hash(state);
             }
         }
diff --git a/src/unix/linux_like/linux/musl/b64/s390x.rs b/src/unix/linux_like/linux/musl/b64/s390x.rs
index b992a2c4361e4..8a274f39dfb77 100644
--- a/src/unix/linux_like/linux/musl/b64/s390x.rs
+++ b/src/unix/linux_like/linux/musl/b64/s390x.rs
@@ -88,7 +88,7 @@ cfg_if! {
 
         impl hash::Hash for fpreg_t {
             fn hash<H: hash::Hasher>(&self, state: &mut H) {
-                let d: u64 = unsafe { mem::transmute(self.d) };
+                let d: u64 = self.d.to_bits();
                 d.hash(state);
             }
         }