diff --git a/examples/suit_update/Makefile b/examples/suit_update/Makefile
index d649e86dc1..1b10091ad2 100644
--- a/examples/suit_update/Makefile
+++ b/examples/suit_update/Makefile
@@ -98,11 +98,17 @@ TEST_ON_CI_BLACKLIST = all
 
 include $(RIOTBASE)/Makefile.include
 
+# allow to use large blocks to utilize large MTUs (802.15.4g, Ethernet, WiFi)
+LARGE_BLOCKS ?= 0
+ifeq (1, $(LARGE_BLOCKS))
+  CFLAGS += -DCONFIG_SUIT_COAP_BLOCKSIZE=COAP_BLOCKSIZE_1024
+else
 # lower pktbuf size to something sufficient for this application
 # Set GNRC_PKTBUF_SIZE via CFLAGS if not being set via Kconfig.
 ifndef CONFIG_GNRC_PKTBUF_SIZE
   CFLAGS += -DCONFIG_GNRC_PKTBUF_SIZE=2000
 endif
+endif
 
 .PHONY: host-tools