diff --git a/dist/testbed-support/Makefile.iotlab b/dist/testbed-support/Makefile.iotlab
index acdf9be79e..4a4791aab1 100644
--- a/dist/testbed-support/Makefile.iotlab
+++ b/dist/testbed-support/Makefile.iotlab
@@ -9,6 +9,12 @@ IOTLAB_USER     ?= $(shell cut -f1 -d: $(IOTLAB_AUTH))
 IOTLAB_EXP_ID   ?= $(shell experiment-cli get -l --state Running | grep -m 1 '"id"' | grep -Eo '[[:digit:]]+')
 IOTLAB_EXP_NAME ?= RIOT_EXP
 
+ifneq (,$(findstring m3,$(IOTLAB_TYPE)))
+	BINARY := $(ELFFILE)
+else
+	BINARY := $(HEXFILE)
+endif
+
 $(IOTLAB_AUTH):
 	auth-cli -u $(IOTLAB_USER)
 
@@ -17,13 +23,13 @@ iotlab-exp: $(IOTLAB_AUTH) all
 	    $(eval IOTLAB_EXP_NAME := RIOT_EXP_$(IOTLAB_EXP_NAME))
     endif
     ifeq (,$(AD))
-	    @echo "experiment-cli submit -d $(IOTLAB_DURATION) -l $(IOTLAB_NODES),archi=$(IOTLAB_TYPE)+site=$(IOTLAB_SITE),$(ELFFILE),$(IOTLAB_PROFILE) -n $(IOTLAB_EXP_NAME)"
+	    @echo "experiment-cli submit -d $(IOTLAB_DURATION) -l $(IOTLAB_NODES),archi=$(IOTLAB_TYPE)+site=$(IOTLAB_SITE),$(BINARY),$(IOTLAB_PROFILE) -n $(IOTLAB_EXP_NAME)"
     endif
-	$(eval NEW_ID := $(shell experiment-cli submit -d $(IOTLAB_DURATION) -l $(IOTLAB_NODES),archi=$(IOTLAB_TYPE)+site=$(IOTLAB_SITE),$(ELFFILE),$(IOTLAB_PROFILE) -n $(IOTLAB_EXP_NAME) | grep -Eo '[[:digit:]]+'))
+	$(eval NEW_ID := $(shell experiment-cli submit -d $(IOTLAB_DURATION) -l $(IOTLAB_NODES),archi=$(IOTLAB_TYPE)+site=$(IOTLAB_SITE),$(BINARY),$(IOTLAB_PROFILE) -n $(IOTLAB_EXP_NAME) | grep -Eo '[[:digit:]]+'))
 	$(AD)experiment-cli wait -i $(NEW_ID)
 
 iotlab-flash: $(IOTLAB_AUTH) all
-	$(AD)node-cli --update $(ELFFILE) -i $(IOTLAB_EXP_ID)
+	$(AD)node-cli --update $(BINARY) -i $(IOTLAB_EXP_ID)
 
 iotlab-reset: $(IOTLAB_AUTH)
 	$(AD)node-cli --reset -i $(IOTLAB_EXP_ID)