diff --git a/src/plugins/qbsprojectmanager/qbsproject.cpp b/src/plugins/qbsprojectmanager/qbsproject.cpp
index 0ea82d6f405..521b210852f 100644
--- a/src/plugins/qbsprojectmanager/qbsproject.cpp
+++ b/src/plugins/qbsprojectmanager/qbsproject.cpp
@@ -756,10 +756,16 @@ void QbsProject::updateDocuments(const QSet<QString> &files)
         }
     }
     QSet<IDocument *> toAdd;
-    foreach (const QString &f, filesToAdd)
-        toAdd.insert(new ProjectDocument(Constants::MIME_TYPE, FileName::fromString(f),
-                                         [this]() { delayParsing(); }));
-
+    const FileName buildDir = FileName::fromString(m_projectData.buildDirectory());
+    for (const QString &f : qAsConst(filesToAdd)) {
+        // A changed qbs file (project, module etc) should trigger a re-parse, but not if
+        // the file was generated by qbs itself, in which case that might cause an infinite loop.
+        const FileName fp = FileName::fromString(f);
+        static const ProjectDocument::ProjectCallback noOpCallback = []{};
+        const ProjectDocument::ProjectCallback reparseCallback = [this]() { delayParsing(); };
+        toAdd.insert(new ProjectDocument(Constants::MIME_TYPE, fp, fp.isChildOf(buildDir)
+                                         ? noOpCallback : reparseCallback));
+    }
     m_qbsDocuments.unite(toAdd);
 }