diff --git a/boards/blackpill-128kib/Kconfig b/boards/blackpill-128kib/Kconfig
index dcf447d38c..cc5a9e80fa 100644
--- a/boards/blackpill-128kib/Kconfig
+++ b/boards/blackpill-128kib/Kconfig
@@ -17,4 +17,11 @@ config BOARD_BLACKPILL_128KIB
 
     select HAS_HIGHLEVEL_STDIO
 
+# HACK: This is added due to the make resolution
+# make will select timer backend, probably due to the USBUS
+# and kconfig cannot select if something is already selected like make
+choice ZTIMER_MSEC_BACKEND
+    default ZTIMER_MSEC_BACKEND_TIMER if MODULE_PERIPH_RTC
+endchoice
+
 source "$(RIOTBOARD)/common/blxxxpill/Kconfig"
diff --git a/boards/bluepill-128kib/Kconfig b/boards/bluepill-128kib/Kconfig
index aad5ed6edd..01c3e0ab93 100644
--- a/boards/bluepill-128kib/Kconfig
+++ b/boards/bluepill-128kib/Kconfig
@@ -17,4 +17,11 @@ config BOARD_BLUEPILL_128KIB
 
     select HAS_HIGHLEVEL_STDIO
 
+# HACK: This is added due to the make resolution
+# make will select timer backend, probably due to the USBUS
+# and kconfig cannot select if something is already selected like make
+choice ZTIMER_MSEC_BACKEND
+    default ZTIMER_MSEC_BACKEND_TIMER if MODULE_PERIPH_RTC
+endchoice
+
 source "$(RIOTBOARD)/common/blxxxpill/Kconfig"
diff --git a/sys/ztimer/Kconfig b/sys/ztimer/Kconfig
index f1ab66248e..4f8b5ab5db 100644
--- a/sys/ztimer/Kconfig
+++ b/sys/ztimer/Kconfig
@@ -59,7 +59,7 @@ config MODULE_ZTIMER_MSEC
     bool "Milliseconds"
     select MODULE_ZTIMER
 
-choice
+choice ZTIMER_MSEC_BACKEND
     bool "Backend"
     depends on MODULE_ZTIMER_MSEC
     default ZTIMER_MSEC_BACKEND_RTT if !MODULE_ZTIMER_NO_PERIPH_RTT