diff --git a/txscript/reference_test.go b/txscript/reference_test.go
index 6ac9b68f..9d9c8f39 100644
--- a/txscript/reference_test.go
+++ b/txscript/reference_test.go
@@ -836,6 +836,7 @@ func TestCalcSignatureHash(t *testing.T) {
 			err)
 	}
 
+	const scriptVersion = 0
 	for i, test := range tests {
 		if i == 0 {
 			// Skip first line -- contains comments only.
@@ -855,15 +856,14 @@ func TestCalcSignatureHash(t *testing.T) {
 		}
 
 		subScript, _ := hex.DecodeString(test[1].(string))
-		parsedScript, err := parseScript(subScript)
-		if err != nil {
+		if err := checkScriptParses(scriptVersion, subScript); err != nil {
 			t.Errorf("TestCalcSignatureHash failed test #%d: "+
 				"Failed to parse sub-script: %v", i, err)
 			continue
 		}
 
 		hashType := SigHashType(testVecF64ToUint32(test[3].(float64)))
-		hash, err := calcSignatureHash(parsedScript, hashType, &tx,
+		hash, err := CalcSignatureHash(subScript, hashType, &tx,
 			int(test[2].(float64)))
 		if err != nil {
 			t.Errorf("TestCalcSignatureHash failed test #%d: "+