fix integrity error

runtime/common/src/fees.rs

@@ -24,10 +24,7 @@ pub use frame_support::weights::{Weight, WeightToFee};
 use pallet_transaction_payment::{Multiplier, MultiplierUpdate};
 use sp_arithmetic::traits::{BaseArithmetic, Unsigned};
 use sp_core::Get;
-use sp_runtime::{
-    traits::{Convert, One},
-    Perquintill,
-};
+use sp_runtime::{traits::Convert, Perquintill};
 #[cfg(not(feature = "constant-fees"))]
 use {
     crate::weights::extrinsic_weights::ExtrinsicBaseWeight,
@@ -37,6 +34,7 @@ use {
     },
     smallvec::smallvec,
     sp_arithmetic::MultiplyRational,
+    sp_runtime::traits::One,
     sp_runtime::Perbill,
     sp_runtime::SaturatedConversion,
     sp_runtime::Saturating,
@@ -189,7 +187,7 @@ where
     X: Get<Multiplier>,
 {
     fn min() -> Multiplier {
-        1.into()
+        0.into()
     }
 
     fn max() -> Multiplier {