diff --git a/build/platform.blackbox.mak b/build/platform.blackbox.mak
index 66b99c52a..bfa4cc6e7 100644
--- a/build/platform.blackbox.mak
+++ b/build/platform.blackbox.mak
@@ -3,3 +3,8 @@ USE_LIBA ?= 0
 EXE = bin
 EPSILON_ONBOARDING_APP = 0
 EPSILON_SOFTWARE_UPDATE_PROMPT = 0
+
+ifeq ($(DEBUG),1)
+else
+SFLAGS += -DNDEBUG
+endif