diff --git a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
index bd2d4d20206f..0fe471bde384 100644
--- a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
+++ b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
@@ -415,6 +415,9 @@ static void webkitWebContextConstructed(GObject* object)
         g_clear_pointer(&priv->memoryPressureSettings, webkit_memory_pressure_settings_free);
     }
 
+    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));