diff --git a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
index af43f9acfd24..3ac762417a98 100644
--- a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
+++ b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
@@ -397,7 +397,7 @@ static void webkitWebContextConstructed(GObject* object)
     configuration.setProcessSwapsOnNavigation(priv->psonEnabled);
     if (!priv->psonEnabled) {
         const char* useSingleWebProcess = getenv("WEBKIT_USE_SINGLE_WEB_PROCESS");
-        if (useSingleWebProcess && strcmp(useSingleWebProcess, "0"))
+        if ((useSingleWebProcess && strcmp(useSingleWebProcess, "0")) || !g_strcmp0(g_get_prgname(), "evolution"))
             configuration.setUsesSingleWebProcess(true);
     }