diff --git a/lib/opFns.js b/lib/opFns.js
index 8d0c95fc67..611e8c6368 100644
--- a/lib/opFns.js
+++ b/lib/opFns.js
@@ -157,6 +157,45 @@ module.exports = {
 
     return new BN(word.shrn((31 - pos.toNumber()) * 8).andln(0xff))
   },
+  SHL: function (a, b, runState) {
+    if (!runState._common.gteHardfork('constantinople')) {
+      trap(ERROR.INVALID_OPCODE)
+    }
+    if (a.gten(256)) {
+      return new BN(0)
+    }
+    return b.shln(a.toNumber()).iand(utils.MAX_INTEGER)
+  },
+  SHR: function (a, b, runState) {
+    if (!runState._common.gteHardfork('constantinople')) {
+      trap(ERROR.INVALID_OPCODE)
+    }
+    if (a.gten(256)) {
+      return new BN(0)
+    }
+    return b.shrn(a.toNumber())
+  },
+  SAR: function (a, b, runState) {
+    if (!runState._common.gteHardfork('constantinople')) {
+      trap(ERROR.INVALID_OPCODE)
+    }
+    const isSigned = b.testn(255)
+    if (a.gten(256)) {
+      if (isSigned) {
+        return new BN(utils.MAX_INTEGER)
+      } else {
+        return new BN(0)
+      }
+    }
+    const c = b.shrn(a.toNumber())
+    if (isSigned) {
+      const shiftedOutWidth = 255 - a.toNumber()
+      const mask = utils.MAX_INTEGER.shrn(shiftedOutWidth).shln(shiftedOutWidth)
+      return c.ior(mask)
+    } else {
+      return c
+    }
+  },
   // 0x20 range - crypto
   SHA3: function (offset, length, runState) {
     var data = memLoad(runState, offset, length)
diff --git a/lib/opcodes.js b/lib/opcodes.js
index f277001e13..11dbc31d9f 100644
--- a/lib/opcodes.js
+++ b/lib/opcodes.js
@@ -26,6 +26,9 @@ const codes = {
   0x18: ['XOR', 3, 2, 1, false],
   0x19: ['NOT', 3, 1, 1, false],
   0x1a: ['BYTE', 3, 2, 1, false],
+  0x1b: ['SHL', 3, 2, 1, false],
+  0x1c: ['SHR', 3, 2, 1, false],
+  0x1d: ['SAR', 3, 2, 1, false],
 
   // 0x20 range - crypto
   0x20: ['SHA3', 30, 2, 1, false],
diff --git a/lib/runCode.js b/lib/runCode.js
index 7dace81894..921342af1d 100644
--- a/lib/runCode.js
+++ b/lib/runCode.js
@@ -213,14 +213,14 @@ module.exports = function (opts, cb) {
       if (result !== undefined) {
         if (retNum !== 1) {
           // opcode post-stack mismatch
-          return cb(VmError(ERROR.INTERNAL_ERROR))
+          return cb(new VmError(ERROR.INTERNAL_ERROR))
         }
 
         runState.stack.push(result)
       } else {
         if (!opInfo.async && retNum !== 0) {
           // opcode post-stack mismatch
-          return cb(VmError(ERROR.INTERNAL_ERROR))
+          return cb(new VmError(ERROR.INTERNAL_ERROR))
         }
       }