--- a/dom/animation/KeyframeEffectReadOnly.cpp
+++ b/dom/animation/KeyframeEffectReadOnly.cpp
@@ -344,17 +344,17 @@ KeyframeEffectReadOnly::DoUpdateProperti
 
   for (const AnimationProperty& property : mProperties) {
     if (property.mIsRunningOnCompositor) {
       runningOnCompositorProperties.AddProperty(property.mProperty);
     }
   }
 
   mProperties = Move(properties);
-  UpadateEffectSet();
+  UpdateEffectSet();
 
   for (AnimationProperty& property : mProperties) {
     property.mIsRunningOnCompositor =
       runningOnCompositorProperties.HasProperty(property.mProperty);
   }
 
   CalculateCumulativeChangeHint(aStyle);
 
@@ -956,17 +956,17 @@ KeyframeEffectReadOnly::UpdateTargetRegi
   // Animation::IsRelevant() should be up-to-date by the time we get here.
   MOZ_ASSERT(isRelevant == IsCurrent() || IsInEffect(),
              "Out of date Animation::IsRelevant value");
 
   if (isRelevant) {
     EffectSet* effectSet =
       EffectSet::GetOrCreateEffectSet(mTarget->mElement, mTarget->mPseudoType);
     effectSet->AddEffect(*this);
-    UpadateEffectSet(effectSet);
+    UpdateEffectSet(effectSet);
   } else {
     UnregisterTarget();
   }
 }
 
 void
 KeyframeEffectReadOnly::UnregisterTarget()
 {
@@ -1827,17 +1827,17 @@ KeyframeEffectReadOnly::ContainsAnimated
       }
     }
   }
 
   return false;
 }
 
 void
-KeyframeEffectReadOnly::UpadateEffectSet(EffectSet* aEffectSet) const
+KeyframeEffectReadOnly::UpdateEffectSet(EffectSet* aEffectSet) const
 {
   EffectSet* effectSet =
     aEffectSet ? aEffectSet
                : EffectSet::GetEffectSet(mTarget->mElement,
                                          mTarget->mPseudoType);
   if (!effectSet) {
     return;
   }

--- a/dom/animation/KeyframeEffectReadOnly.h
+++ b/dom/animation/KeyframeEffectReadOnly.h
@@ -459,17 +459,17 @@ private:
   // limitation is stored in |aOutPerformanceWarning|.
   static bool CanAnimateTransformOnCompositor(
     const nsIFrame* aFrame,
     AnimationPerformanceWarning::Type& aPerformanceWarning);
   static bool IsGeometricProperty(const nsCSSPropertyID aProperty);
 
   static const TimeDuration OverflowRegionRefreshInterval();
 
-  void UpadateEffectSet(mozilla::EffectSet* aEffectSet = nullptr) const;
+  void UpdateEffectSet(mozilla::EffectSet* aEffectSet = nullptr) const;
 
   // FIXME: This flag will be removed in bug 1324966.
   bool mIsComposingStyle = false;
 };
 
 } // namespace dom
 } // namespace mozilla