diff --git a/qmake/generators/win32/msbuild_objectmodel.cpp b/qmake/generators/win32/msbuild_objectmodel.cpp
index 3147f24961f..9bbeed36ff1 100644
--- a/qmake/generators/win32/msbuild_objectmodel.cpp
+++ b/qmake/generators/win32/msbuild_objectmodel.cpp
@@ -754,7 +754,7 @@ void VCXProjectWriter::write(XmlOutput &xml, VCProject &tool)
     // The file filters are added in a separate file for MSBUILD.
     QFile filterFile;
     filterFile.setFileName(Option::output.fileName().append(".filters"));
-    if (filterFile.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
+    if (!filterFile.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate)) {
         warn_msg(WarnLogic, "Cannot open output filter file");
         return;
     }