diff --git a/firmware/gen_live_documentation.sh b/firmware/gen_live_documentation.sh
index f22f50b572..c086740091 100755
--- a/firmware/gen_live_documentation.sh
+++ b/firmware/gen_live_documentation.sh
@@ -2,13 +2,7 @@
 
 rm gen_live_documentation.log
 
-if [ -n "$1" ]; then
-  echo "With prepend $1"
-  EXTRA_PREPEND="-DUsagesReader.extra_prepend=$1"
-fi
-
 java -DSystemOut.name=logs/gen_live_documentation \
- ${EXTRA_PREPEND} \
  -cp ../java_tools/ConfigDefinition.jar \
  com.rusefi.ldmp.UsagesReader integration/LiveData.yaml
 [ $? -eq 0 ] || { echo "ERROR generating"; exit 1; }