diff --git a/pkg/nimble/Makefile b/pkg/nimble/Makefile
index a735e5436b..30ac9231d1 100644
--- a/pkg/nimble/Makefile
+++ b/pkg/nimble/Makefile
@@ -10,7 +10,7 @@ PDIR = $(PKG_SOURCE_DIR)
 
 # NimBLE is not optimized for building with all (extra) warnings enabled. So for
 # now, we disable a number of selected compiler warnings when building NimBLE.
-CFLAGS += -Wno-extra
+CFLAGS += -Wno-extra -Wno-cast-align
 ifeq (llvm,$(TOOLCHAIN))
 # the static function `ble_ll_adv_active_chanset_is_sec()` in
 # `nimble/controller/src/ble_ll_adv.c` isn't used in our compilation path, so
diff --git a/pkg/nimble/patches/0001-porting-nimble-silence-Wcast-align.patch b/pkg/nimble/patches/0001-porting-nimble-silence-Wcast-align.patch
new file mode 100644
index 0000000000..6cae3621a2
Binary files /dev/null and b/pkg/nimble/patches/0001-porting-nimble-silence-Wcast-align.patch differ