diff --git a/core/block.go b/core/block.go
index e7465673..13722c14 100644
--- a/core/block.go
+++ b/core/block.go
@@ -22,6 +22,6 @@ func GethBlockToCoreBlock(gethBlock *types.Block) Block {
 		GasLimit:             gethBlock.GasLimit(),
 		GasUsed:              gethBlock.GasUsed(),
 		Time:                 gethBlock.Time(),
-		NumberOfTransactions: len(gethBlock.Transactions()),
+		NumberOfTransactions: gethBlock.Transactions().Len(),
 	}
 }
diff --git a/core/block_test.go b/core/block_test.go
new file mode 100644
index 00000000..4a6197f6
--- /dev/null
+++ b/core/block_test.go
@@ -0,0 +1,31 @@
+package core
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Conversion of GethBlock to core.Block", func() {
+
+	It("Converts a GethBlock to core.Block (metadata, without transactions)", func() {
+		blockNumber := big.NewInt(1)
+		gasUsed := big.NewInt(100000)
+		gasLimit := big.NewInt(100000)
+		time := big.NewInt(140000000)
+		transaction := types.Transaction{}
+
+		header := types.Header{Number: blockNumber, GasUsed: gasUsed, Time: time, GasLimit: gasLimit}
+		block := types.NewBlock(&header, []*types.Transaction{&transaction}, []*types.Header{}, []*types.Receipt{})
+		gethBlock := GethBlockToCoreBlock(block)
+
+		Expect(gethBlock.Number).To(Equal(blockNumber))
+		Expect(gethBlock.GasUsed).To(Equal(gasUsed))
+		Expect(gethBlock.GasLimit).To(Equal(gasLimit))
+		Expect(gethBlock.Time).To(Equal(time))
+		Expect(gethBlock.NumberOfTransactions).To(Equal(1))
+	})
+
+})
diff --git a/core/blockchain_db_observer_test.go b/core/blockchain_db_observer_test.go
index bbdfc767..0bd3ec54 100644
--- a/core/blockchain_db_observer_test.go
+++ b/core/blockchain_db_observer_test.go
@@ -86,10 +86,10 @@ var _ = Describe("Saving blocks to the database", func() {
 			var gasUsed float64
 			rows.Scan(&blockNumber, &gasLimit, &gasUsed, &blockTime)
 			savedBlock := core.Block{
-				GasUsed: big.NewInt(int64(gasUsed)),
+				GasUsed:  big.NewInt(int64(gasUsed)),
 				GasLimit: big.NewInt(int64(gasLimit)),
 				Number:   big.NewInt(blockNumber),
-				Time:   big.NewInt(int64(blockTime)),
+				Time:     big.NewInt(int64(blockTime)),
 			}
 			savedBlocks = append(savedBlocks, savedBlock)
 		}