diff --git a/third_party/silabs/silabs_board.gni b/third_party/silabs/silabs_board.gni
index eefe07c4c37d90..dcdd53c96d5dd7 100644
--- a/third_party/silabs/silabs_board.gni
+++ b/third_party/silabs/silabs_board.gni
@@ -162,8 +162,8 @@ if (silabs_board == "BRD4338A" || silabs_board == "BRD2605A") {
   print("Using custom board configuration")
   print("silabs_family:", silabs_family)
   print("silabs_mcu:", silabs_mcu)
-  assert(silabs_family != "", "Must specify silabs_family to config custom board")
-  assert(silabs_mcu != "", "Must specify silabs_mcu to config custom board")
+  assert(silabs_family != "", "Must specify silabs_family for custom board")
+  assert(silabs_mcu != "", "Must specify silabs_mcu for custom board")
 } else {
   assert(
       false,