diff --git a/dlls/cryptui/main.c b/dlls/cryptui/main.c
index 21c04e0a963..ca58a97e562 100644
--- a/dlls/cryptui/main.c
+++ b/dlls/cryptui/main.c
@@ -6269,7 +6269,7 @@ static BOOL show_export_ui(DWORD dwFlags, HWND hwndParent,
     data.pwszWizardTitle = pwszWizardTitle;
     data.pExportInfo = pExportInfo;
     data.contextInfo.dwSize = sizeof(data.contextInfo);
-    data.contextInfo.dwExportFormat = 0;
+    data.contextInfo.dwExportFormat = CRYPTUI_WIZ_EXPORT_FORMAT_DER;
     data.contextInfo.fExportChain = FALSE;
     data.contextInfo.fStrongEncryption = FALSE;
     data.contextInfo.fExportPrivateKeys = FALSE;