diff --git a/components/style/properties/gecko.mako.rs b/components/style/properties/gecko.mako.rs
index d7eaf8eb3c4..2d3907b23d0 100644
--- a/components/style/properties/gecko.mako.rs
+++ b/components/style/properties/gecko.mako.rs
@@ -3390,7 +3390,15 @@ fn static_assert() {
     ${impl_transition_count('property', 'Property')}
 
     pub fn animations_equals(&self, other: &Self) -> bool {
-        unsafe { bindings::Gecko_StyleAnimationsEquals(&self.gecko.mAnimations, &other.gecko.mAnimations) }
+        return self.gecko.mAnimationNameCount == other.gecko.mAnimationNameCount
+            && self.gecko.mAnimationDelayCount == other.gecko.mAnimationDelayCount
+            && self.gecko.mAnimationDirectionCount == other.gecko.mAnimationDirectionCount
+            && self.gecko.mAnimationDurationCount == other.gecko.mAnimationDurationCount
+            && self.gecko.mAnimationFillModeCount == other.gecko.mAnimationFillModeCount
+            && self.gecko.mAnimationIterationCountCount == other.gecko.mAnimationIterationCountCount
+            && self.gecko.mAnimationPlayStateCount == other.gecko.mAnimationPlayStateCount
+            && self.gecko.mAnimationTimingFunctionCount == other.gecko.mAnimationTimingFunctionCount
+            && unsafe { bindings::Gecko_StyleAnimationsEquals(&self.gecko.mAnimations, &other.gecko.mAnimations) }
     }
 
     pub fn set_animation_name<I>(&mut self, v: I)