diff --git a/variants/rp2040/rp2040.ini b/variants/rp2040/rp2040.ini
index 7be150e922..aec2a13b34 100644
--- a/variants/rp2040/rp2040.ini
+++ b/variants/rp2040/rp2040.ini
@@ -25,6 +25,9 @@ build_src_filter =
 lib_ignore =
   BluetoothOTA
   lvgl
+  ; Ships its own Preferences.h, which the LDF matches against the ARCH_ESP32-only
+  ; include in NodeDB.cpp; compiling it then trips its own "not a Challenger" #error.
+  iLabs_Hearth
 
 lib_deps =
   ${arduino_base.lib_deps}
diff --git a/variants/rp2350/rp2350.ini b/variants/rp2350/rp2350.ini
index 0705ed8eca..d4965fb376 100644
--- a/variants/rp2350/rp2350.ini
+++ b/variants/rp2350/rp2350.ini
@@ -22,6 +22,9 @@ build_src_filter =
 lib_ignore =
   BluetoothOTA
   lvgl
+  ; Ships its own Preferences.h, which the LDF matches against the ARCH_ESP32-only
+  ; include in NodeDB.cpp; compiling it then trips its own "not a Challenger" #error.
+  iLabs_Hearth
 
 lib_deps =
   ${arduino_base.lib_deps}