diff --git a/cpu/lpc23xx/Makefile.dep b/cpu/lpc23xx/Makefile.dep
index 0ed40cc62e..c263ac5995 100644
--- a/cpu/lpc23xx/Makefile.dep
+++ b/cpu/lpc23xx/Makefile.dep
@@ -4,4 +4,8 @@ USEMODULE += newlib
 USEMODULE += periph
 USEMODULE += pm_layered
 
+ifneq (,$(filter mci,$(USEMODULE)))
+  USEMODULE += xtimer
+endif
+
 include $(RIOTCPU)/arm7_common/Makefile.dep