diff --git a/consensus/state_processing/src/common/altair.rs b/consensus/state_processing/src/common/altair.rs
index 208ac701d..6d26abd2d 100644
--- a/consensus/state_processing/src/common/altair.rs
+++ b/consensus/state_processing/src/common/altair.rs
@@ -44,7 +44,7 @@ fn get_base_reward_per_increment(
     total_active_balance: u128,
     spec: &ChainSpec,
 ) -> Result<u64, ArithError> {
-    spec.effective_balance_increment
-        .safe_mul(spec.base_reward_factor)?
-        .safe_div(total_active_balance.integer_sqrt() as u64)
+    Ok((spec.effective_balance_increment as u128)
+        .safe_mul(spec.base_reward_factor as u128)?
+        .safe_div(total_active_balance.integer_sqrt())? as u64)
 }
diff --git a/consensus/state_processing/src/per_epoch_processing/slashings.rs b/consensus/state_processing/src/per_epoch_processing/slashings.rs
index 7e30d9de2..4e9032422 100644
--- a/consensus/state_processing/src/per_epoch_processing/slashings.rs
+++ b/consensus/state_processing/src/per_epoch_processing/slashings.rs
@@ -22,14 +22,14 @@ pub fn process_slashings<T: EthSpec>(
             && epoch.safe_add(T::EpochsPerSlashingsVector::to_u64().safe_div(2)?)?
                 == validator.withdrawable_epoch
         {
-            let increment = spec.effective_balance_increment;
+            let increment = spec.effective_balance_increment as u128;
             let effective_balance = validator.effective_balance as u128;
             let penalty_numerator = effective_balance
-                .safe_div(increment as u128)?
+                .safe_div(increment)?
                 .safe_mul(adjusted_total_slashing_balance)?;
             let penalty = penalty_numerator
                 .safe_div(total_balance)?
-                .safe_mul(increment as u128)?;
+                .safe_mul(increment)?;
 
             // Equivalent to `decrease_balance(state, index, penalty)`, but avoids borrowing `state`.
             let balance = balances