diff --git a/lib/http/rpcbase.js b/lib/http/rpcbase.js
index 382294bc..ead171b9 100644
--- a/lib/http/rpcbase.js
+++ b/lib/http/rpcbase.js
@@ -302,15 +302,15 @@ RPCBase.prototype.attach = function attach(rpc) {
 function RPCError(code, msg) {
   Error.call(this);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, RPCError);
-
   assert(typeof code === 'number');
   assert(typeof msg === 'string');
 
   this.type = 'RPCError';
   this.message = msg;
   this.code = code;
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, RPCError);
 }
 
 util.inherits(RPCError, Error);
diff --git a/lib/http/rpcclient.js b/lib/http/rpcclient.js
index d7e70143..9abc8f74 100644
--- a/lib/http/rpcclient.js
+++ b/lib/http/rpcclient.js
@@ -85,12 +85,12 @@ RPCClient.prototype.execute = async function execute(method, params) {
 function RPCError(msg, code) {
   Error.call(this);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, RPCError);
-
   this.type = 'RPCError';
   this.message = msg + '';
   this.code = code >>> 0;
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, RPCError);
 }
 
 util.inherits(RPCError, Error);
diff --git a/lib/primitives/mtx.js b/lib/primitives/mtx.js
index 3d3340ac..adeac841 100644
--- a/lib/primitives/mtx.js
+++ b/lib/primitives/mtx.js
@@ -1803,9 +1803,6 @@ CoinSelector.prototype.selectHard = function selectHard() {
 function FundingError(msg, available, required) {
   Error.call(this);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, FundingError);
-
   this.type = 'FundingError';
   this.message = msg;
   this.availableFunds = -1;
@@ -1817,6 +1814,9 @@ function FundingError(msg, available, required) {
     this.availableFunds = available;
     this.requiredFunds = required;
   }
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, FundingError);
 }
 
 util.inherits(FundingError, Error);
diff --git a/lib/protocol/errors.js b/lib/protocol/errors.js
index f4e570f7..bafdc6ec 100644
--- a/lib/protocol/errors.js
+++ b/lib/protocol/errors.js
@@ -38,9 +38,6 @@ const util = require('../utils/util');
 function VerifyError(msg, code, reason, score, malleated) {
   Error.call(this);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, VerifyError);
-
   assert(typeof code === 'string');
   assert(typeof reason === 'string');
   assert(score >= 0);
@@ -55,6 +52,9 @@ function VerifyError(msg, code, reason, score, malleated) {
 
   this.message = `Verification failure: ${reason}`
     + ` (code=${code} score=${score} hash=${msg.rhash()})`;
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, VerifyError);
 }
 
 util.inherits(VerifyError, Error);
diff --git a/lib/script/common.js b/lib/script/common.js
index 2272e13a..e728e619 100644
--- a/lib/script/common.js
+++ b/lib/script/common.js
@@ -822,9 +822,6 @@ exports.ScriptError = function ScriptError(code, op, ip) {
 
   Error.call(this);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, ScriptError);
-
   this.type = 'ScriptError';
   this.code = code;
   this.message = code;
@@ -838,6 +835,9 @@ exports.ScriptError = function ScriptError(code, op, ip) {
     this.op = op.value;
     this.ip = ip;
   }
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, ScriptError);
 };
 
 util.inherits(exports.ScriptError, Error);
diff --git a/lib/utils/encoding.js b/lib/utils/encoding.js
index ee77ba8e..2176f808 100644
--- a/lib/utils/encoding.js
+++ b/lib/utils/encoding.js
@@ -1031,13 +1031,16 @@ encoding.sizeVarString = function sizeVarString(str, enc) {
  */
 
 encoding.EncodingError = function EncodingError(offset, reason) {
-  Error.call(this);
+  if (!(this instanceof EncodingError))
+    return new EncodingError(offset, reason);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, EncodingError);
+  Error.call(this);
 
   this.type = 'EncodingError';
   this.message = `${reason} (offset=${offset}).`;
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, EncodingError);
 };
 
 inherits(encoding.EncodingError, Error);
diff --git a/lib/utils/validator.js b/lib/utils/validator.js
index c0374e81..92228436 100644
--- a/lib/utils/validator.js
+++ b/lib/utils/validator.js
@@ -599,13 +599,16 @@ function inherits(child, parent) {
 }
 
 function ValidationError(key, type) {
-  Error.call(this);
+  if (!(this instanceof ValidationError))
+    return new ValidationError(key, type);
 
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, ValidationError);
+  Error.call(this);
 
   this.type = 'ValidationError';
   this.message = `${fmt(key)} must be a ${type}.`;
+
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, ValidationError);
 }
 
 inherits(ValidationError, Error);