diff --git a/src/network/core/game_info.cpp b/src/network/core/game_info.cpp
--- a/src/network/core/game_info.cpp
+++ b/src/network/core/game_info.cpp
@@ -46,7 +46,7 @@ std::string_view GetNetworkRevisionStrin
 
 	if (network_revision.empty()) {
 		network_revision = _openttd_revision;
-		if (_openttd_revision_tagged) {
+		if (_openttd_revision_tagged || _openttd_revision_modified == 3 || _openttd_revision_modified == 4) {
 			/* Tagged; do not mangle further, though ensure it's not too long. */
 			if (network_revision.size() >= NETWORK_REVISION_LENGTH) network_revision.resize(NETWORK_REVISION_LENGTH - 1);
 		} else {