diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 96e5f1b73..9a8c6942b 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -1062,8 +1062,8 @@ func (bc *Blockchain) UnsubscribeFromExecutions(ch chan<- *state.AppExecResult)
 // amount of NEO between specified blocks. The amount of NEO being passed is in
 // its natural non-divisible form (1 NEO as 1, 2 NEO as 2, no multiplication by
 // 10⁸ is neeeded as for Fixed8).
-func (bc *Blockchain) CalculateClaimable(value int64, startHeight, endHeight uint32) util.Fixed8 {
-	var amount util.Fixed8
+func (bc *Blockchain) CalculateClaimable(value int64, startHeight, endHeight uint32) int64 {
+	var amount int64
 	di := uint32(bc.decrementInterval)
 
 	ustart := startHeight / di
@@ -1080,15 +1080,15 @@ func (bc *Blockchain) CalculateClaimable(value int64, startHeight, endHeight uin
 
 		istart := startHeight % di
 		for ustart < uend {
-			amount += util.Fixed8(di-istart) * util.Fixed8(bc.generationAmount[ustart])
+			amount += int64(di-istart) * int64(bc.generationAmount[ustart])
 			ustart++
 			istart = 0
 		}
 
-		amount += util.Fixed8(iend-istart) * util.Fixed8(bc.generationAmount[ustart])
+		amount += int64(iend-istart) * int64(bc.generationAmount[ustart])
 	}
 
-	return amount * util.Fixed8(value)
+	return amount * value
 }
 
 // FeePerByte returns transaction network fee per byte.
diff --git a/pkg/core/blockchainer/blockchainer.go b/pkg/core/blockchainer/blockchainer.go
index 6c5fcad2f..dae93659d 100644
--- a/pkg/core/blockchainer/blockchainer.go
+++ b/pkg/core/blockchainer/blockchainer.go
@@ -19,7 +19,7 @@ type Blockchainer interface {
 	AddHeaders(...*block.Header) error
 	AddBlock(*block.Block) error
 	BlockHeight() uint32
-	CalculateClaimable(value int64, startHeight, endHeight uint32) util.Fixed8
+	CalculateClaimable(value int64, startHeight, endHeight uint32) int64
 	Close()
 	HeaderHeight() uint32
 	GetBlock(hash util.Uint256) (*block.Block, error)
diff --git a/pkg/core/native/native_neo.go b/pkg/core/native/native_neo.go
index 73388bbdd..0d3addd68 100644
--- a/pkg/core/native/native_neo.go
+++ b/pkg/core/native/native_neo.go
@@ -199,7 +199,7 @@ func (n *NEO) distributeGas(ic *interop.Context, h util.Uint160, acc *state.NEOB
 	}
 	gen := ic.Chain.CalculateClaimable(acc.Balance.Int64(), acc.BalanceHeight, ic.Block.Index)
 	acc.BalanceHeight = ic.Block.Index
-	n.GAS.mint(ic, h, big.NewInt(int64(gen)))
+	n.GAS.mint(ic, h, big.NewInt(gen))
 	return nil
 }
 
@@ -213,7 +213,7 @@ func (n *NEO) unclaimedGas(ic *interop.Context, args []stackitem.Item) stackitem
 	tr := bs.Trackers[n.Hash]
 
 	gen := ic.Chain.CalculateClaimable(tr.Balance, tr.LastUpdatedBlock, end)
-	return stackitem.NewBigInteger(big.NewInt(int64(gen)))
+	return stackitem.NewBigInteger(big.NewInt(gen))
 }
 
 func (n *NEO) registerValidator(ic *interop.Context, args []stackitem.Item) stackitem.Item {
diff --git a/pkg/network/helper_test.go b/pkg/network/helper_test.go
index e63664b51..f6f66dcdb 100644
--- a/pkg/network/helper_test.go
+++ b/pkg/network/helper_test.go
@@ -31,7 +31,7 @@ func (chain testChain) ApplyPolicyToTxSet([]*transaction.Transaction) []*transac
 func (chain testChain) GetConfig() config.ProtocolConfiguration {
 	panic("TODO")
 }
-func (chain testChain) CalculateClaimable(int64, uint32, uint32) util.Fixed8 {
+func (chain testChain) CalculateClaimable(int64, uint32, uint32) int64 {
 	panic("TODO")
 }
 
diff --git a/pkg/rpc/server/server.go b/pkg/rpc/server/server.go
index 8cb69d7b7..03399574c 100644
--- a/pkg/rpc/server/server.go
+++ b/pkg/rpc/server/server.go
@@ -787,7 +787,7 @@ func (s *Server) getUnclaimedGas(ps request.Params) (interface{}, *response.Erro
 		return "0", nil
 	}
 	gas := s.chain.CalculateClaimable(neo, neoHeight, s.chain.BlockHeight()+1) // +1 as in C#, for the next block.
-	return strconv.FormatInt(int64(gas), 10), nil                              // It's not represented as Fixed8 in C#.
+	return strconv.FormatInt(gas, 10), nil
 }
 
 // getValidators returns the current NEO consensus nodes information and voting status.