diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp b/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp
index b7207ce45ef..17fc1e736c0 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp
@@ -11,6 +11,7 @@
 #include "../projectexplorertr.h"
 #include "../projecttree.h"
 
+#include <coreplugin/editormanager/documentmodel.h>
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/editormanager/ieditor.h>
 #include <coreplugin/messagemanager.h>
@@ -351,6 +352,14 @@ void JsonWizard::accept()
         return;
     }
 
+    const QList<Core::IDocument *> documentsToClose
+        = transform(m_files, [](const GeneratorFile &file) -> Core::IDocument * {
+              if ((file.file.attributes() & Core::GeneratedFile::OpenEditorAttribute) == 0)
+                  return nullptr;
+              return Core::DocumentModel::documentForFilePath(file.file.filePath());
+          });
+    Core::EditorManager::closeDocuments(documentsToClose, /*askAboutModifiedEditors=*/false);
+
     emit preWriteFiles(m_files);
     if (!JsonWizardGenerator::writeFiles(this, &m_files, &errorMessage)) {
         if (!errorMessage.isEmpty())