1 files changed, 1 insertions, 0 deletions
diff --git a/src/util/fees.h b/src/util/fees.h
index d52046a44c..3f1c33ad9c 100644
--- a/src/util/fees.h
+++ b/src/util/fees.h
@@ -13,5 +13,6 @@ enum class FeeReason;
 bool FeeModeFromString(const std::string& mode_string, FeeEstimateMode& fee_estimate_mode);
 std::string StringForFeeReason(FeeReason reason);
 std::string FeeModes(const std::string& delimiter);
+const std::string InvalidEstimateModeErrorMessage();
 
 #endif // BITCOIN_UTIL_FEES_H