diff --git a/scripts/Makedefs.mk b/scripts/Makedefs.mk
index c344580..02777ac 100644
--- a/scripts/Makedefs.mk
+++ b/scripts/Makedefs.mk
@@ -120,7 +120,7 @@ else
 endif
 
 # Check if the DEBUG environment variable is set.
-DEBUG ?= 1
+DEBUG ?= 0
 ifeq ($(DEBUG),1)
     CFLAGS += -O3 -g3 -DDEBUG
 else