diff --git a/src/network/network_content.cpp b/src/network/network_content.cpp
index 1191ef22a3..dfb2bf6aca 100644
--- a/src/network/network_content.cpp
+++ b/src/network/network_content.cpp
@@ -173,7 +173,7 @@ bool ClientNetworkContentSocketHandler::Receive_SERVER_INFO(Packet &p)
 	ConstContentVector parents;
 	this->ReverseLookupTreeDependency(parents, ci);
 	for (const ContentInfo *ici : parents) {
-		this->CheckDependencyState(const_cast<ContentInfo *>(ici));
+		this->CheckDependencyState(ici);
 	}
 
 	this->OnReceiveContentInfo(ci);
@@ -973,7 +973,7 @@ void ClientNetworkContentSocketHandler::ReverseLookupTreeDependency(ConstContent
  * Check the dependencies (recursively) of this content info
  * @param ci the content info to check the dependencies of
  */
-void ClientNetworkContentSocketHandler::CheckDependencyState(ContentInfo *ci)
+void ClientNetworkContentSocketHandler::CheckDependencyState(const ContentInfo *ci)
 {
 	if (ci->IsSelected() || ci->state == ContentInfo::ALREADY_HERE) {
 		/* Selection is easy; just walk all children and set the
diff --git a/src/network/network_content.h b/src/network/network_content.h
index bf62108edf..2a693cc5f1 100644
--- a/src/network/network_content.h
+++ b/src/network/network_content.h
@@ -130,7 +130,7 @@ public:
 
 	void ReverseLookupDependency(ConstContentVector &parents, const ContentInfo *child) const;
 	void ReverseLookupTreeDependency(ConstContentVector &tree, const ContentInfo *child) const;
-	void CheckDependencyState(ContentInfo *ci);
+	void CheckDependencyState(const ContentInfo *ci);
 
 	/** Get the number of content items we know locally. */
 	uint Length() const { return (uint)this->infos.size(); }