diff --git a/block.go b/block.go
index bf84354..276f800 100644
--- a/block.go
+++ b/block.go
@@ -19,7 +19,7 @@ type OutOfRangeError string
 // BlockHeightUnknown is the value returned for a block height that is unknown.
 // This is typically because the block has not been inserted into the main chain
 // yet.
-const BlockHeightUnknown = int64(-1)
+const BlockHeightUnknown = int32(-1)
 
 // Error satisfies the error interface and prints human-readable errors.
 func (e OutOfRangeError) Error() string {
@@ -34,7 +34,7 @@ type Block struct {
 	msgBlock        *wire.MsgBlock // Underlying MsgBlock
 	serializedBlock []byte         // Serialized bytes for the block
 	blockSha        *wire.ShaHash  // Cached block hash
-	blockHeight     int64          // Height in the main block chain
+	blockHeight     int32          // Height in the main block chain
 	transactions    []*Tx          // Transactions
 	txnsGenerated   bool           // ALL wrapped transactions generated
 }
@@ -184,12 +184,12 @@ func (b *Block) TxLoc() ([]wire.TxLoc, error) {
 
 // Height returns the saved height of the block in the block chain.  This value
 // will be BlockHeightUnknown if it hasn't already explicitly been set.
-func (b *Block) Height() int64 {
+func (b *Block) Height() int32 {
 	return b.blockHeight
 }
 
 // SetHeight sets the height of the block in the block chain.
-func (b *Block) SetHeight(height int64) {
+func (b *Block) SetHeight(height int32) {
 	b.blockHeight = height
 }
 
diff --git a/block_test.go b/block_test.go
index d911d2a..f31efdd 100644
--- a/block_test.go
+++ b/block_test.go
@@ -27,7 +27,7 @@ func TestBlock(t *testing.T) {
 	}
 
 	// Ensure block height set and get work properly.
-	wantHeight := int64(100000)
+	wantHeight := int32(100000)
 	b.SetHeight(wantHeight)
 	if gotHeight := b.Height(); gotHeight != wantHeight {
 		t.Errorf("Height: mismatched height - got %v, want %v",