diff --git a/src/common/url.cpp b/src/common/url.cpp
index f988ee51f2..2c7c15bf5a 100644
--- a/src/common/url.cpp
+++ b/src/common/url.cpp
@@ -32,7 +32,9 @@ wxIMPLEMENT_CLASS(wxURL, wxURI);
 wxProtoInfo *wxURL::ms_protocols = NULL;
 
 // Enforce linking of protocol classes:
+#if wxUSE_PROTOCOL_FILE
 USE_PROTOCOL(wxFileProto)
+#endif
 
 #if wxUSE_PROTOCOL_HTTP
 USE_PROTOCOL(wxHTTP)