diff --git a/src/network/CMakeLists.txt b/src/network/CMakeLists.txt
index 1c625042ab1..fcd31fe9797 100644
--- a/src/network/CMakeLists.txt
+++ b/src/network/CMakeLists.txt
@@ -198,6 +198,8 @@ qt_internal_extend_target(Network CONDITION WIN32
         iphlpapi
         secur32
         winhttp
+    DEFINES
+        NOMINMAX
 )
 
 qt_internal_extend_target(Network CONDITION APPLE AND NOT UIKIT