diff --git a/shell/openprojectdialog.h b/shell/openprojectdialog.h
--- a/shell/openprojectdialog.h
+++ b/shell/openprojectdialog.h
@@ -65,6 +65,7 @@
     KPageWidgetItem* openPage;
     KPageWidgetItem* projectInfoPage;
     QStringList m_fileList;
+    QMap<QString, QStringList> m_projectFilters;
 
     KDevelop::OpenProjectPage* openPageWidget;
     KDevelop::ProjectSourcePage* sourcePageWidget;
diff --git a/shell/openprojectdialog.cpp b/shell/openprojectdialog.cpp
--- a/shell/openprojectdialog.cpp
+++ b/shell/openprojectdialog.cpp
@@ -22,6 +22,7 @@
 
 #include "core.h"
 #include "uicontroller.h"
+#include "plugincontroller.h"
 #include "mainwindow.h"
 #include "shellextension.h"
 #include "projectsourcepage.h"
@@ -38,6 +39,24 @@
 {
     resize(QSize(700, 500));
 
+    QStringList filters, allEntry;
+    allEntry << "*." + ShellExtension::getInstance()->projectFileExtension();
+    filters << QStringLiteral("%1|%2 (%1)").arg("*." + ShellExtension::getInstance()->projectFileExtension(), ShellExtension::getInstance()->projectFileDescription());
+    QVector<KPluginMetaData> plugins = ICore::self()->pluginController()->queryExtensionPlugins(QStringLiteral("org.kdevelop.IProjectFileManager"));
+    foreach(const KPluginMetaData& info, plugins)
+    {
+        QStringList filter = KPluginMetaData::readStringList(info.rawData(), QStringLiteral("X-KDevelop-ProjectFilesFilter"));
+        QString desc = info.value(QStringLiteral("X-KDevelop-ProjectFilesFilterDescription"));
+
+        if (!filter.isEmpty() && !desc.isEmpty()) {
+            m_projectFilters.insert(info.name(), filter);
+            allEntry += filter;
+            filters << QStringLiteral("%1|%2 (%1)").arg(filter.join(QStringLiteral(" ")), desc);
+        }
+    }
+
+    filters.prepend(i18n("%1|All Project Files (%1)", allEntry.join(QStringLiteral(" "))));
+
     QUrl start = startUrl.isValid() ? startUrl : Core::self()->projectController()->projectsBaseDirectory();
     start = start.adjusted(QUrl::NormalizePathSegments);
     KPageWidgetItem* currentPage = 0;
@@ -49,7 +68,7 @@
         currentPage = sourcePage;
     }
 
-    openPageWidget = new OpenProjectPage( start, this );
+    openPageWidget = new OpenProjectPage( start, filters, this );
     connect( openPageWidget, &OpenProjectPage::urlSelected, this, &OpenProjectDialog::validateOpenUrl );
     connect( openPageWidget, &OpenProjectPage::accepted, this, &OpenProjectDialog::openPageAccepted );
     openPage = addPage( openPageWidget, i18n("Select a build system setup file, existing KDevelop project, "
@@ -136,43 +155,39 @@
         if( page )
         {
             page->setProjectName( m_url.fileName() );
-            OpenProjectPage* page2 = qobject_cast<OpenProjectPage*>( openPage->widget() );
-            if( page2 )
+            // Default manager
+            page->setProjectManager( QStringLiteral("Generic Project Manager") );
+            // clear the filelist
+            m_fileList.clear();
+
+            if( isDir ) {
+                // If a dir was selected fetch all files in it
+                KIO::ListJob* job = KIO::listDir( m_url );
+                connect( job, &KIO::ListJob::entries,
+                                this, &OpenProjectDialog::storeFileList);
+                KJobWidgets::setWindow(job, Core::self()->uiController()->activeMainWindow());
+                job->exec();
+            } else {
+                // Else we'lll just take the given file
+                m_fileList << url.fileName();
+            }
+            // Now find a manager for the file(s) in our filelist.
+            bool managerFound = false;
+            foreach( const QString& manager, m_projectFilters.keys() )
             {
-                // Default manager
-                page->setProjectManager( QStringLiteral("Generic Project Manager") );
-                // clear the filelist
-                m_fileList.clear();
-
-                if( isDir ) {
-                    // If a dir was selected fetch all files in it
-                    KIO::ListJob* job = KIO::listDir( m_url );
-                    connect( job, &KIO::ListJob::entries,
-                                  this, &OpenProjectDialog::storeFileList);
-                    KJobWidgets::setWindow(job, Core::self()->uiController()->activeMainWindow());
-                    job->exec();
-                } else {
-                    // Else we'lll just take the given file
-                    m_fileList << url.fileName();
-                }
-                // Now find a manager for the file(s) in our filelist.
-                bool managerFound = false;
-                foreach( const QString& manager, page2->projectFilters().keys() )
+                foreach( const QString& filterexp, m_projectFilters.value(manager) )
                 {
-                    foreach( const QString& filterexp, page2->projectFilters().value(manager) )
-                    {
-                        if( !m_fileList.filter( QRegExp( filterexp, Qt::CaseSensitive, QRegExp::Wildcard ) ).isEmpty() )
-                        {
-                            managerFound = true;
-                            break;
-                        }
-                    }
-                    if( managerFound )
+                    if( !m_fileList.filter( QRegExp( filterexp, Qt::CaseSensitive, QRegExp::Wildcard ) ).isEmpty() )
                     {
-                        page->setProjectManager( manager );
+                        managerFound = true;
                         break;
                     }
                 }
+                if( managerFound )
+                {
+                    page->setProjectManager( manager );
+                    break;
+                }
             }
         }
         m_url.setPath( m_url.path() + '/' + m_url.fileName() + '.' + ShellExtension::getInstance()->projectFileExtension() );
diff --git a/shell/openprojectpage.h b/shell/openprojectpage.h
--- a/shell/openprojectpage.h
+++ b/shell/openprojectpage.h
@@ -25,8 +25,8 @@
     Q_OBJECT
 
 public:
-    explicit OpenProjectPage( const QUrl& startUrl, QWidget* parent = nullptr );
-    QMap<QString,QStringList> projectFilters() const;
+    explicit OpenProjectPage( const QUrl& startUrl, const QStringList& filters,
+        QWidget* parent = nullptr );
     void setUrl(const QUrl& url);
 
 signals:
@@ -45,7 +45,6 @@
 private:
     QUrl getAbsoluteUrl(const QString&) const;
     KFileWidget* fileWidget;
-    QMap<QString,QStringList> m_projectFilters;
 };
 
 }
diff --git a/shell/openprojectpage.cpp b/shell/openprojectpage.cpp
--- a/shell/openprojectpage.cpp
+++ b/shell/openprojectpage.cpp
@@ -20,37 +20,18 @@
 
 #include "shellextension.h"
 #include "core.h"
-#include "plugincontroller.h"
 
 namespace KDevelop
 {
 
-OpenProjectPage::OpenProjectPage( const QUrl& startUrl, QWidget* parent )
+OpenProjectPage::OpenProjectPage( const QUrl& startUrl, const QStringList& filters,
+    QWidget* parent )
         : QWidget( parent )
 {
     QHBoxLayout* layout = new QHBoxLayout( this );
 
     fileWidget = new KFileWidget( startUrl, this);
 
-    QStringList filters;
-    QStringList allEntry;
-    allEntry << "*."+ShellExtension::getInstance()->projectFileExtension();
-    filters << QStringLiteral( "%1|%2 (%1)").arg("*."+ShellExtension::getInstance()->projectFileExtension(), ShellExtension::getInstance()->projectFileDescription());
-    QVector<KPluginMetaData> plugins = ICore::self()->pluginController()->queryExtensionPlugins( QStringLiteral( "org.kdevelop.IProjectFileManager" ) );
-    foreach(const KPluginMetaData& info, plugins)
-    {
-        QStringList filter = KPluginMetaData::readStringList(info.rawData(), QStringLiteral("X-KDevelop-ProjectFilesFilter"));
-	    QString desc = info.value(QStringLiteral("X-KDevelop-ProjectFilesFilterDescription"));
-        QString filterline;
-        if(!filter.isEmpty() && !desc.isEmpty()) {
-            m_projectFilters.insert(info.name(), filter);
-            allEntry += filter;
-            filters << QStringLiteral("%1|%2 (%1)").arg(filter.join(QStringLiteral(" ")), desc);
-        }
-    }
-
-    filters.prepend( i18n( "%1|All Project Files (%1)", allEntry.join( QStringLiteral(" ") ) ) );
-
     fileWidget->setFilter( filters.join(QStringLiteral("\n")) );
 
     fileWidget->setMode( KFile::Modes( KFile::File | KFile::Directory | KFile::ExistingOnly ) );
@@ -120,10 +101,5 @@
     emit urlSelected( getAbsoluteUrl( file ) );
 }
 
-QMap<QString,QStringList> OpenProjectPage::projectFilters() const
-{
-    return m_projectFilters;
-}
-
 }