diff --git a/src/network/kernel/qhostinfo.cpp b/src/network/kernel/qhostinfo.cpp
index 54d72e6e07..9be6abced0 100644
--- a/src/network/kernel/qhostinfo.cpp
+++ b/src/network/kernel/qhostinfo.cpp
@@ -998,6 +998,9 @@ void QHostInfoLookupManager::abortLookup(int id)
     if (wasDeleted)
         return;
 
+    if (id == -1)
+        return;
+
 #if QT_CONFIG(thread)
     // is postponed? delete and return
     for (int i = 0; i < postponedLookups.size(); i++) {