diff --git a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
index da25d96e35b5..242ce8c00eeb 100644
--- a/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
+++ b/Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp
@@ -381,6 +381,10 @@ static void webkitWebContextConstructed(GObject* object)
         const char* useSingleWebProcess = getenv("WEBKIT_USE_SINGLE_WEB_PROCESS");
         if (useSingleWebProcess && strcmp(useSingleWebProcess, "0"))
             configuration.setUsesSingleWebProcess(true);
+        else {
+            if (!g_strcmp0(g_get_prgname(), "evolution"))
+                configuration.setUsesSingleWebProcess(true);
+        }
     }
 #endif