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-rw-r--r--Firestore/Source/Remote/FSTWatchChange.mm2
1 files changed, 1 insertions, 1 deletions
diff --git a/Firestore/Source/Remote/FSTWatchChange.mm b/Firestore/Source/Remote/FSTWatchChange.mm
index 2c1a916..284e980 100644
--- a/Firestore/Source/Remote/FSTWatchChange.mm
+++ b/Firestore/Source/Remote/FSTWatchChange.mm
@@ -70,7 +70,7 @@ NS_ASSUME_NONNULL_BEGIN
- (NSUInteger)hash {
NSUInteger hash = self.updatedTargetIDs.hash;
hash = hash * 31 + self.removedTargetIDs.hash;
- hash = hash * 31 + std::hash<std::string>{}(self.documentKey.ToString());
+ hash = hash * 31 + self.documentKey.Hash();
hash = hash * 31 + self.document.hash;
return hash;
}