diff --git a/firmware/.gitignore b/firmware/.gitignore
index 4b45e40617..4ee74c32c7 100644
--- a/firmware/.gitignore
+++ b/firmware/.gitignore
@@ -3,4 +3,4 @@ benchmark.txt
 gen_*.log
 deliver/
 rusefi_tool.log
-
+build*
diff --git a/firmware/Makefile b/firmware/Makefile
index 98e2c4ffd1..514c7f6b67 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -55,6 +55,9 @@ ifeq ($(USE_CPPOPT),)
   USE_CPPOPT = -std=c++17 -Wno-register -fno-rtti -fno-threadsafe-statics -fno-exceptions -fno-use-cxa-atexit
 endif
 
+# Hellen is one of the boards which cares
+USE_CPPOPT += -Wno-error=tautological-compare
+
 # Enable this if you want the linker to remove unused code and data
 ifeq ($(USE_LINK_GC),)
   USE_LINK_GC = yes