diff --git a/lib/net.js b/lib/net.js
index 5f4eec89ec..5129a59642 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -1558,7 +1558,8 @@ Server.prototype.getConnections = function(cb) {
   const self = this;
 
   function end(err, connections) {
-    nextTick(self[async_id_symbol], cb, err, connections);
+    const asyncId = self._handle ? self[async_id_symbol] : null;
+    nextTick(asyncId, cb, err, connections);
   }
 
   if (!this._usingSlaves) {
diff --git a/test/async-hooks/test-net-get-connections.js b/test/async-hooks/test-net-get-connections.js
new file mode 100644
index 0000000000..56e1c5f38b
--- /dev/null
+++ b/test/async-hooks/test-net-get-connections.js
@@ -0,0 +1,11 @@
+'use strict';
+
+const common = require('../common');
+const net = require('net');
+const server = net.createServer();
+
+// This test was based on an error raised by Haraka.
+// It caused server.getConnections to raise an exception.
+// Ref: https://github.com/haraka/Haraka/pull/1951
+
+server.getConnections(common.mustCall());