diff --git a/Makefile b/Makefile
index e975a97e..428e6d4e 100644
--- a/Makefile
+++ b/Makefile
@@ -5,8 +5,6 @@ prog :=neptune-core
 debug ?=
 
 $(info debug is $(debug))
-# Treat all warnings as errors
-export RUSTFLAGS = -Dwarnings
 
 # Set another target dir than default to avoid builds from `make`
 # to invalidate cache from barebones use of `cargo` commands.