diff --git a/simulator/compile.sh b/simulator/compile.sh
index f9526627db..5faac1615f 100755
--- a/simulator/compile.sh
+++ b/simulator/compile.sh
@@ -1,5 +1,9 @@
+#!/usr/bin/env bash
+
+set -e
+
 rm -f build/rusefi_simulator.exe
-make -j$(nproc) -r
+make -j$(nproc) -r $@
 [ $? -eq 0 ] || { echo "Simulator compilation failed"; exit 1; }
 file build/rusefi_simulator
 echo "TIMESTAMP $(date "+%D %T.%2N") just compiled rusEFI simulator"