diff --git a/dom/animation/KeyframeUtils.cpp b/dom/animation/KeyframeUtils.cpp
index 2147c4ee705a..06839ffd1ae1 100644
--- a/dom/animation/KeyframeUtils.cpp
+++ b/dom/animation/KeyframeUtils.cpp
@@ -1014,8 +1014,6 @@ MakePropertyValuePair(nsCSSPropertyID aProperty, const nsAString& aStringValue,
   result.mProperty = aProperty;
 
   if (aDocument->GetStyleBackendType() == StyleBackendType::Servo) {
-    nsCString name = nsCSSProps::GetStringValue(aProperty);
-
     NS_ConvertUTF16toUTF8 value(aStringValue);
 
     // FIXME this is using the wrong base uri (bug 1343919)
@@ -1024,7 +1022,7 @@ MakePropertyValuePair(nsCSSPropertyID aProperty, const nsAString& aStringValue,
                                                  aDocument->NodePrincipal());
 
     RefPtr<RawServoDeclarationBlock> servoDeclarationBlock =
-      Servo_ParseProperty(&name, &value, data).Consume();
+      Servo_ParseProperty(aProperty, &value, data).Consume();
 
     if (servoDeclarationBlock) {
       result.mServoDeclarationBlock = servoDeclarationBlock.forget();
diff --git a/layout/style/ServoBindingList.h b/layout/style/ServoBindingList.h
index c684caeb949f..fac53177b842 100644
--- a/layout/style/ServoBindingList.h
+++ b/layout/style/ServoBindingList.h
@@ -124,7 +124,7 @@ SERVO_BINDING_FUNC(Servo_PageRule_SetStyle, void,
 // Animations API
 SERVO_BINDING_FUNC(Servo_ParseProperty,
                    RawServoDeclarationBlockStrong,
-                   const nsACString* property, const nsACString* value,
+                   nsCSSPropertyID property, const nsACString* value,
                    RawGeckoURLExtraData* data)
 SERVO_BINDING_FUNC(Servo_ParseEasing, bool,
                    const nsAString* easing,