diff --git a/lib/script/script.js b/lib/script/script.js
index 54f629d..f32d768 100644
--- a/lib/script/script.js
+++ b/lib/script/script.js
@@ -841,15 +841,16 @@ Script.prototype.checkMinimalPush = function(i) {
 /**
  * Comes from bitcoind's script DecodOP_N function
  * @param {number} opcode
- * @returns {number} numeric value in range of -1 to 16
+ * @returns {number} numeric value in range of 0 to 16
  */
 Script.prototype._decodeOP_N = function(opcode) {
-  if (opcode === Opcode.OP_0)
+  if (opcode === Opcode.OP_0) {
     return 0;
-  else if (opcode >= Opcode.OP_1 && opcode <= Opcode.OP_16)
+  } else if (opcode >= Opcode.OP_1 && opcode <= Opcode.OP_16) {
     return opcode - (Opcode.OP_1 - 1);
-  else
+  } else {
     throw new Error('Invalid opcode: ' + JSON.stringify(opcode));
+  }
 };
 
 /**
@@ -857,20 +858,21 @@ Script.prototype._decodeOP_N = function(opcode) {
  * @param {boolean} use current (true) or pre-version-0.6 (false) logic
  * @returns {number} number of signature operations required by this script
  */
-Script.prototype.getSignatureOperationsCount = function(fAccurate) {
+Script.prototype.getSignatureOperationsCount = function(accurate) {
   var self = this;
+  accurate = (typeof accurate == 'undefined') ? true : accurate;
   var n = 0;
   var lastOpcode = Opcode.OP_INVALIDOPCODE;
   _.each(self.chunks, function getChunkOther(chunk) {
     var opcode = chunk.opcodenum;
-    if (opcode == Opcode.OP_CHECKSIG || opcode == Opcode.OP_CHECKSIGVERIFY)
+    if (opcode == Opcode.OP_CHECKSIG || opcode == Opcode.OP_CHECKSIGVERIFY) {
       n++;
-    else if (opcode == Opcode.OP_CHECKMULTISIG ||
-      opcode == Opcode.OP_CHECKMULTISIGVERIFY) {
-      if (fAccurate && lastOpcode >= Opcode.OP_1 && lastOpcode <= Opcode.OP_16)
+    } else if (opcode == Opcode.OP_CHECKMULTISIG || opcode == Opcode.OP_CHECKMULTISIGVERIFY) {
+      if (accurate && lastOpcode >= Opcode.OP_1 && lastOpcode <= Opcode.OP_16) {
         n += self._decodeOP_N(lastOpcode);
-      else
+      } else {
         n += 20;
+      }
     }
     lastOpcode = opcode;
   });
diff --git a/test/script/script.js b/test/script/script.js
index 46462f4..5f5a3c4 100644
--- a/test/script/script.js
+++ b/test/script/script.js
@@ -778,35 +778,49 @@ describe('Script', function() {
   describe('#getSignatureOperationsCount', function() {
     // comes from bitcoind src/test/sigopcount_tests
     // only test calls to function with boolean param, not signature ref param
-    it('should match bitcoind behavior', function() {
+    var pubkey_hexs = [
+      '022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da',
+      '03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9',
+      '021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18',
+    ];
+    it('should return zero for empty scripts', function() {
       Script().getSignatureOperationsCount(false).should.equal(0);
       Script().getSignatureOperationsCount(true).should.equal(0);
+    });
+    it('should handle multi-sig multisig scripts from string', function() {
       var s1 = 'OP_1 01 FF OP_2 OP_CHECKMULTISIG';
       Script(s1).getSignatureOperationsCount(true).should.equal(2);
       s1 += ' OP_IF OP_CHECKSIG OP_ENDIF';
       Script(s1).getSignatureOperationsCount(true).should.equal(3);
       Script(s1).getSignatureOperationsCount(false).should.equal(21);
-
-      // do not test BOOST_CHECK_EQUAL(p2sh.GetSigOpCount(scriptSig), 3U);
-
-      var pubkey_hexs = [
-        '022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da',
-        '03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9',
-        '021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18',
-      ];
-      var sortkeys = pubkey_hexs.slice(0, 3).map(PublicKey);
-      var s2 = Script.buildMultisigOut(sortkeys, 1);
+    });
+    it.skip('should handle script arg from p2sh object from string', function() {
+      // BOOST_CHECK_EQUAL(p2sh.GetSigOpCount(scriptSig), 3U);
+    });
+    it('should handle multi-sig-out scripts from utility function', function() {
+      var sortKeys = pubkey_hexs.slice(0, 3).map(PublicKey);
+      var s2 = Script.buildMultisigOut(sortKeys, 1);
       Script(s2).getSignatureOperationsCount(true).should.equal(3);
       Script(s2).getSignatureOperationsCount(false).should.equal(20);
-
-      // create a bogus, well-formed signature
+    });
+    it('should handle P2SH-multisig-in scripts from utility', function() {
+      // create a well-formed signature, does not need to match pubkeys
       var signature = bitcore.crypto.Signature.fromString('30060201FF0201FF');
       var signatures = [ signature.toBuffer() ];
       var p2sh = Script.buildP2SHMultisigIn(pubkey_hexs, 1, signatures, {});
       p2sh.getSignatureOperationsCount(true).should.equal(0);
       p2sh.getSignatureOperationsCount(false).should.equal(0);
-
-      // do not test BOOST_CHECK_EQUAL(p2sh.GetSigOpCount(scriptSig2), 3U);
+    });
+    it.skip('should handle script arg from p2sh object from utility', function() {
+      // BOOST_CHECK_EQUAL(p2sh.GetSigOpCount(scriptSig2), 3U);
+    });
+    it('should default the one and only argument to true', function() {
+      var s1 = 'OP_1 01 FF OP_2 OP_CHECKMULTISIG';
+      var trueCount = Script(s1).getSignatureOperationsCount(true);
+      var falseCount = Script(s1).getSignatureOperationsCount(false);
+      var defaultCount = Script(s1).getSignatureOperationsCount();
+      trueCount.should.not.equal(falseCount);
+      trueCount.should.equal(defaultCount);
     });
   });
 });