diff --git a/tests/jepsen/resources/node-config.edn b/tests/jepsen/resources/node-config.edn
index 93b2bffff..ed3e45b44 100644
--- a/tests/jepsen/resources/node-config.edn
+++ b/tests/jepsen/resources/node-config.edn
@@ -1,6 +1,10 @@
 [{"n1" {:replication-role :main}
   "n2" {:replication-role :replica :replication-mode :async :port 10000}
-  "n3" {:replication-role :replica :replication-mode :async :port 10000}}
+  "n3" {:replication-role :replica :replication-mode :async :port 10000}
+  "n4" {:replication-role :replica :replication-mode :sync :port 10000}
+  "n5" {:replication-role :replica :replication-mode :sync :port 10000}}
  {"n1" {:replication-role :main}
   "n2" {:replication-role :replica :replication-mode :async :port 10000}
-  "n3" {:replication-role :replica :replication-mode :sync :port 10000}}]
+  "n3" {:replication-role :replica :replication-mode :sync :port 10000}
+  "n4" {:replication-role :replica :replication-mode :sync :port 10000}
+  "n5" {:replication-role :replica :replication-mode :sync :port 10000}}]
diff --git a/tests/jepsen/src/jepsen/memgraph/core.clj b/tests/jepsen/src/jepsen/memgraph/core.clj
index 0209556d9..9e028a8e7 100644
--- a/tests/jepsen/src/jepsen/memgraph/core.clj
+++ b/tests/jepsen/src/jepsen/memgraph/core.clj
@@ -60,19 +60,6 @@
             :nemesis         (:nemesis nemesis)
             :generator       gen})))
 
-(defn default-node-configuration
-  "Creates default replication configuration for nodes.
-  All of them are replicas in sync mode."
-  [nodes]
-  (reduce (fn [cur n]
-            (conj cur {n
-                       {:replication-role :replica
-                        :replication-mode :sync
-                        :port             10000
-                        :timeout          5}}))
-          {}
-          nodes))
-
 (defn resolve-hostname
   "Resolve hostnames to ip address"
   [host]
@@ -102,6 +89,8 @@
   "Merge user defined configuration with default configuration.
   Check if the configuration is valid."
   [nodes node-configs]
+
+
   (when-not (every? (fn [config]
                       (= 1
                          (count
@@ -113,6 +102,12 @@
 
 
   (doseq [node-config node-configs]
+    (when-not (= (count node-config) (count nodes))
+      (throw (Exception. "Invalid node configuration. Configuration not specified for all nodes. Check your .edn file.")))
+
+    (when-not (every? #(contains? node-config %) nodes)
+      (throw (Exception. "Invalid node configuration. Configuration missing for some of nodes [:n1 :n2 :n3 :n4 :n5]. Check your .edn file.")))
+
     (let [replica-nodes-configs (filter
                                   #(= (:replication-role %) :replica)
                                   (vals node-config))]
@@ -129,10 +124,7 @@
              "Every replication node requires "
              ":replication-mode to be defined."))))
 
-  (map (fn [node-config] (resolve-all-node-hostnames
-          (merge
-            (default-node-configuration nodes)
-            node-config)))
+  (map (fn [node-config] (resolve-all-node-hostnames node-config))
        node-configs))
 
 (def cli-opts