diff --git a/src/network/network_content_gui.cpp b/src/network/network_content_gui.cpp
index b2df6cda7f..cfc06b7ba5 100644
--- a/src/network/network_content_gui.cpp
+++ b/src/network/network_content_gui.cpp
@@ -757,6 +757,8 @@ public:
 
 	virtual void OnInvalidateData(int data)
 	{
+		if (this->content.NeedRebuild()) this->BuildContentList();
+
 		/* To sum all the bytes we intend to download */
 		this->filesize_sum = 0;
 		bool show_select_all = false;