diff --git a/sys/ztimer/Makefile.include b/sys/ztimer/Makefile.include
index dc4f5f3b85..a6e0153de2 100644
--- a/sys/ztimer/Makefile.include
+++ b/sys/ztimer/Makefile.include
@@ -4,6 +4,8 @@ ifneq (,$(filter ztimer_xtimer_compat,$(USEMODULE)))
   PSEUDOMODULES += xtimer
 endif
 
+MODULES_ZTIMER_ON_RTT_CONFLICT = rtt_rtc gnrc_lwmac gnrc_gomach
+
 # By defaul use highest possible RTT_FREQUENCY for platforms that allow it. This
 # might not be the most optimized for conversion guarantees that ztimer_periph_rtt
 # will have a capable backend.
@@ -12,4 +14,10 @@ ifneq (,$(filter ztimer_periph_rtt,$(USEMODULE)))
     RTT_FREQUENCY ?= RTT_MAX_FREQUENCY
     CFLAGS += -DRTT_FREQUENCY=$(RTT_FREQUENCY)
   endif
+
+  MODULES_ZTIMER_ON_RTT_CONFLICTING = $(filter $(MODULES_ZTIMER_ON_RTT_CONFLICT),$(USEMODULE))
+  ifneq (0,$(words $(MODULES_ZTIMER_ON_RTT_CONFLICTING)))
+    $(info $(COLOR_YELLOW)WARNING! The following modules conflict with 'ztimer_periph_rtt': '$(MODULES_ZTIMER_ON_RTT_CONFLICTING)')
+    $(info To disable ztimer periph_rtt auto-inclusion add 'ztimer_no_periph_rtt' to 'USEMODULE'$(COLOR_RESET))
+  endif
 endif