diff --git a/components/style/properties/helpers/animated_properties.mako.rs b/components/style/properties/helpers/animated_properties.mako.rs
index 11ae9115fe8..b079f30b1a8 100644
--- a/components/style/properties/helpers/animated_properties.mako.rs
+++ b/components/style/properties/helpers/animated_properties.mako.rs
@@ -1829,7 +1829,7 @@ impl Animate for Quaternion {
              self.3 * other.3)
             .min(1.0).max(-1.0);
 
-        if dot == 1.0 {
+        if dot.abs() == 1.0 {
             return Ok(*self);
         }