diff --git a/tools/robocode_shim/make_botdir.sh b/tools/robocode_shim/make_botdir.sh
index c0498cc..267613e 100755
--- a/tools/robocode_shim/make_botdir.sh
+++ b/tools/robocode_shim/make_botdir.sh
@@ -30,9 +30,26 @@ cat > "$TARGET/$NAME.json" <<JSON
 }
 JSON
 
+# The Tank Royale bot API reads bot identity from BOT_* environment variables.
+# When the TR booter launches this directory it supplies them (derived from the
+# .json above), but running this script BY HAND does not - and the API then
+# rejects the handshake with "Required bot property 'name' is missing".
+# Exporting them here makes the script work standalone as well.
 cat > "$TARGET/$NAME.sh" <<SH
 #!/bin/sh
 cd "\$(dirname "\$0")"
+
+# Bot identity - keep in sync with $NAME.json
+export BOT_NAME="DrussGT"
+export BOT_VERSION="3.1.4159"
+export BOT_AUTHORS="Jacob"
+export BOT_DESCRIPTION="Real classic DrussGT running on Tank Royale via the robocode_shim bridge"
+export BOT_HOMEPAGE=""
+export BOT_COUNTRY_CODES="se"
+export BOT_GAME_TYPES="classic,1v1"
+export BOT_PLATFORM="JVM"
+export BOT_PROG_LANG="Java 8"
+
 exec java -cp "$OUT:$ROBOCODE_JAR:$TR_BOT_API_JAR" robocode_shim.DrussGTBridge
 SH
 chmod +x "$TARGET/$NAME.sh"