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-rw-r--r--extmod/btstack/btstack.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/extmod/btstack/btstack.mk b/extmod/btstack/btstack.mk
index 9e1857263b..7ecc230003 100644
--- a/extmod/btstack/btstack.mk
+++ b/extmod/btstack/btstack.mk
@@ -67,7 +67,7 @@ endif
LIB_SRC_C += $(SRC_BTSTACK)
# Suppress some warnings.
-BTSTACK_WARNING_CFLAGS = -Wno-old-style-definition -Wno-unused-variable -Wno-unused-parameter -Wimplicit-fallthrough=0
+BTSTACK_WARNING_CFLAGS = -Wno-old-style-definition -Wno-unused-variable -Wno-unused-parameter -Wno-implicit-fallthrough
ifneq ($(CC),clang)
BTSTACK_WARNING_CFLAGS += -Wno-format
endif