diff --git a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
index 6dd9f20e4ff2..995f355f6ee3 100644
--- a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
+++ b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
@@ -400,6 +400,9 @@ static void webkitWebContextConstructed(GObject* object)
 #endif
 #endif
 
+    if (!g_strcmp0(g_get_prgname(), "evolution"))
+        configuration.setUsesSingleWebProcess(true);
+
     if (!priv->websiteDataManager)
         priv->websiteDataManager = adoptGRef(webkit_website_data_manager_new("local-storage-directory", priv->localStorageDirectory.data(), nullptr));