diff --git a/ci.sh b/ci.sh
index a3d9ef81..87f47487 100755
--- a/ci.sh
+++ b/ci.sh
@@ -182,6 +182,4 @@ if [[ -z "${TELEPROBE_TOKEN-}" ]]; then
     exit
 fi
 
-rm out/tests/stm32wb55rg/wpan_ble
-
 teleprobe client run -r out/tests
diff --git a/embassy-stm32/src/rcc/wb.rs b/embassy-stm32/src/rcc/wb.rs
index d90a50cf..f003f6d7 100644
--- a/embassy-stm32/src/rcc/wb.rs
+++ b/embassy-stm32/src/rcc/wb.rs
@@ -135,7 +135,7 @@ pub const WPAN_DEFAULT: Config = Config {
         prediv: 2,
     }),
     pll48: None,
-    rtc: None,
+    rtc: Some(RtcClockSource::LSE),
 
     pll: Some(Pll {
         mul: 12,