diff --git a/platform/osd-merkur/Makefile.osd-merkur b/platform/osd-merkur/Makefile.osd-merkur
index d4918ed07..65cbd80ba 100644
--- a/platform/osd-merkur/Makefile.osd-merkur
+++ b/platform/osd-merkur/Makefile.osd-merkur
@@ -67,9 +67,8 @@ LDFLAGS  += -Wl,--defsym,bootloader_get_mac=$(BOOTLOADER_GET_MAC)
 include $(CONTIKIAVR)/Makefile.avr
 include $(CONTIKIAVR)/radio/Makefile.radio
 
-MODULES += core/net/mac  core/net core/net/mac/sicslowmac \
-      core/net/llsec \
-      core/net/mac/contikimac \
+MODULES += core/net/mac  core/net core/net/mac/sicslowmac core/net/mac/contikimac \
+#     core/net/llsec \
 #     core/net/ipv6 core/net/ipv4 core/net/ip \
 #     core/net/rime \
 #     core/net/rpl \