diff --git a/data-node/src/main/java/org/graylog/datanode/Configuration.java b/data-node/src/main/java/org/graylog/datanode/Configuration.java
index 84ea6aa73c..05b97ec20f 100644
--- a/data-node/src/main/java/org/graylog/datanode/Configuration.java
+++ b/data-node/src/main/java/org/graylog/datanode/Configuration.java
@@ -235,9 +235,6 @@ public class Configuration extends BaseConfiguration {
     @Parameter(value = "root_email")
     private String rootEmail = "";
 
-    @Parameter(value = "single_node_only")
-    private boolean singleNodeOnly = false;
-
     public String getNodeIdFile() {
         return nodeIdFile;
     }
@@ -294,10 +291,6 @@ public class Configuration extends BaseConfiguration {
         return Optional.ofNullable(opensearchNetworkHostHost);
     }
 
-    public boolean isSingleNodeOnly() {
-        return singleNodeOnly;
-    }
-
     public static class NodeIdFileValidator implements Validator<String> {
         @Override
         public void validate(String name, String path) throws ValidationException {
diff --git a/data-node/src/main/java/org/graylog/datanode/configuration/OpensearchConfigurationProvider.java b/data-node/src/main/java/org/graylog/datanode/configuration/OpensearchConfigurationProvider.java
index 9d1bb301be..7fab62efa3 100644
--- a/data-node/src/main/java/org/graylog/datanode/configuration/OpensearchConfigurationProvider.java
+++ b/data-node/src/main/java/org/graylog/datanode/configuration/OpensearchConfigurationProvider.java
@@ -116,11 +116,7 @@ public class OpensearchConfigurationProvider implements Provider<OpensearchConfi
                 networkHost -> config.put("network.host", networkHost));
         config.put("path.data", Path.of(localConfiguration.getOpensearchDataLocation()).resolve(localConfiguration.getDatanodeNodeName()).toAbsolutePath().toString());
         config.put("path.logs", Path.of(localConfiguration.getOpensearchLogsLocation()).resolve(localConfiguration.getDatanodeNodeName()).toAbsolutePath().toString());
-        if (localConfiguration.isSingleNodeOnly()) {
-            config.put("discovery.type", "single-node");
-        } else {
-            config.put("cluster.initial_master_nodes", localConfiguration.getInitialManagerNodes());
-        }
+        config.put("cluster.initial_master_nodes", localConfiguration.getInitialManagerNodes());
 
         // listen on all interfaces
         config.put("network.bind_host", "0.0.0.0");