diff --git a/tests/periph_rtt/Makefile b/tests/periph_rtt/Makefile
index e685d5a054..80c2d54209 100644
--- a/tests/periph_rtt/Makefile
+++ b/tests/periph_rtt/Makefile
@@ -6,3 +6,11 @@ FEATURES_REQUIRED = periph_rtt
 DISABLE_MODULE += periph_init_rtt
 
 include $(RIOTBASE)/Makefile.include
+
+# Put board specific dependencies here
+ifneq (,$(filter-out stm32f1,$(filter stm32%,$(CPU))))
+  # all stm32% but stm32f1 RTT are based on a 16 bit LPTIM, if using the default
+  # 32768KHz configuration TICKS_TO_WAIT will overflow
+  RTT_FREQUENCY ?= 1024
+  CFLAGS += -DRTT_FREQUENCY=$(RTT_FREQUENCY)
+endif