diff --git a/src/libstd/f32.rs b/src/libstd/f32.rs
index 653108cbece..ba75650fc4c 100644
--- a/src/libstd/f32.rs
+++ b/src/libstd/f32.rs
@@ -1495,6 +1495,7 @@ fn test_asinh() {
         assert_eq!(inf.asinh(), inf);
         assert_eq!(neg_inf.asinh(), neg_inf);
         assert!(nan.asinh().is_nan());
+        assert!((-0.0f32).asinh().is_sign_negative()); // issue 63271
         assert_approx_eq!(2.0f32.asinh(), 1.443635475178810342493276740273105f32);
         assert_approx_eq!((-2.0f32).asinh(), -1.443635475178810342493276740273105f32);
     }
diff --git a/src/libstd/f64.rs b/src/libstd/f64.rs
index e5f963d8736..62c659739de 100644
--- a/src/libstd/f64.rs
+++ b/src/libstd/f64.rs
@@ -1441,6 +1441,7 @@ fn test_asinh() {
         assert_eq!(inf.asinh(), inf);
         assert_eq!(neg_inf.asinh(), neg_inf);
         assert!(nan.asinh().is_nan());
+        assert!((-0.0f64).asinh().is_sign_negative()); // issue 63271
         assert_approx_eq!(2.0f64.asinh(), 1.443635475178810342493276740273105f64);
         assert_approx_eq!((-2.0f64).asinh(), -1.443635475178810342493276740273105f64);
     }