diff --git a/fdbserver/TagPartitionedLogSystem.actor.cpp b/fdbserver/TagPartitionedLogSystem.actor.cpp
index 3ccef6192e..a4822a7ef5 100644
--- a/fdbserver/TagPartitionedLogSystem.actor.cpp
+++ b/fdbserver/TagPartitionedLogSystem.actor.cpp
@@ -1908,7 +1908,7 @@ Optional<std::tuple<Version, Version, std::vector<TLogLockResult>>> TagPartition
 		int absent = logSet->logServers.size() - results.size();
 		int safe_range_begin = logSet->tLogWriteAntiQuorum;
 		int new_safe_range_begin = std::min(logSet->tLogWriteAntiQuorum, (int)(results.size() - 1));
-		int safe_range_end = logSet->tLogReplicationFactor - absent;
+		int safe_range_end = std::max(logSet->tLogReplicationFactor - absent, 1);
 
 		if (!lastEnd.present() || ((safe_range_end > 0) && (safe_range_end - 1 < results.size()) &&
 		                           results[safe_range_end - 1].end < lastEnd.get())) {