diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb89619..42a041a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Grant method was added for `*_ready_buffer` spaces (#237).
+- Attempt to index a nil value if box.info.replication array has gaps.
 
 ## [1.4.2] - 2024-08-10
 
diff --git a/queue/abstract/queue_state.lua b/queue/abstract/queue_state.lua
index b61b531..289a7d3 100644
--- a/queue/abstract/queue_state.lua
+++ b/queue/abstract/queue_state.lua
@@ -47,8 +47,9 @@ local function max_lag()
     local n_replica = table.maxn(box.info.replication)
 
     for i = 1, n_replica do
-        if box.info.replication[i].upstream then
-            local lag = box.info.replication[i].upstream.lag
+        local replica = box.info.replication[i]
+        if replica and replica.upstream then
+            local lag = replica.upstream.lag
             if lag > max_lag then
                 max_lag = lag
             end