diff --git a/src/inc/corinfo.h b/src/inc/corinfo.h
index cd48999cd03e..8d8d735c1997 100644
--- a/src/inc/corinfo.h
+++ b/src/inc/corinfo.h
@@ -213,11 +213,11 @@ TODO: Talk about initializing strutures before use
     #define SELECTANY extern __declspec(selectany)
 #endif
 
-SELECTANY const GUID JITEEVersionIdentifier = { /* b6af83a1-ca48-46c6-b7b0-5d7d6a79a5c5 */
-    0xb6af83a1,
-    0xca48,
-    0x46c6,
-    {0xb7, 0xb0, 0x5d, 0x7d, 0x6a, 0x79, 0xa5, 0xc5}
+SELECTANY const GUID JITEEVersionIdentifier = { /* C4B63AD8-0D4D-4103-A928-A981B230F2C4 */
+    0xc4b63ad8, 
+    0xd4d, 
+    0x4103, 
+    { 0xa9, 0x28, 0xa9, 0x81, 0xb2, 0x30, 0xf2, 0xc4 } 
 };
 
 //////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -643,6 +643,7 @@ enum CorInfoHelpFunc
     CORINFO_HELP_THROW_ARGUMENTEXCEPTION,           // throw ArgumentException
     CORINFO_HELP_THROW_ARGUMENTOUTOFRANGEEXCEPTION, // throw ArgumentOutOfRangeException
     CORINFO_HELP_THROW_PLATFORM_NOT_SUPPORTED,      // throw PlatformNotSupportedException
+    CORINFO_HELP_THROW_ARGTYPE_NOT_SUPPORTED,       // throw NotSupportedException
 
     CORINFO_HELP_JIT_PINVOKE_BEGIN, // Transition to preemptive mode before a P/Invoke, frame is the first argument
     CORINFO_HELP_JIT_PINVOKE_END,   // Transition to cooperative mode after a P/Invoke, frame is the first argument
diff --git a/src/inc/jithelpers.h b/src/inc/jithelpers.h
index 1419cda2deed..6d8e86f9a239 100644
--- a/src/inc/jithelpers.h
+++ b/src/inc/jithelpers.h
@@ -347,6 +347,7 @@
     JITHELPER(CORINFO_HELP_THROW_ARGUMENTEXCEPTION,           JIT_ThrowArgumentException,             CORINFO_HELP_SIG_REG_ONLY)
     JITHELPER(CORINFO_HELP_THROW_ARGUMENTOUTOFRANGEEXCEPTION, JIT_ThrowArgumentOutOfRangeException,   CORINFO_HELP_SIG_REG_ONLY)
     JITHELPER(CORINFO_HELP_THROW_PLATFORM_NOT_SUPPORTED,      JIT_ThrowPlatformNotSupportedException, CORINFO_HELP_SIG_REG_ONLY)
+    JITHELPER(CORINFO_HELP_THROW_ARGTYPE_NOT_SUPPORTED,       JIT_ThrowArgTypeNotSupportedException,  CORINFO_HELP_SIG_REG_ONLY)
 
     JITHELPER(CORINFO_HELP_JIT_PINVOKE_BEGIN, NULL, CORINFO_HELP_SIG_UNDEF)
     JITHELPER(CORINFO_HELP_JIT_PINVOKE_END, NULL, CORINFO_HELP_SIG_UNDEF)
diff --git a/src/jit/flowgraph.cpp b/src/jit/flowgraph.cpp
index b6ae5c0dbb83..5524d9b6bae1 100644
--- a/src/jit/flowgraph.cpp
+++ b/src/jit/flowgraph.cpp
@@ -6843,7 +6843,8 @@ bool Compiler::fgIsThrow(GenTreePtr tree)
         (tree->gtCall.gtCallMethHnd == eeFindHelper(CORINFO_HELP_THROWNULLREF)) ||
         (tree->gtCall.gtCallMethHnd == eeFindHelper(CORINFO_HELP_THROW)) ||
         (tree->gtCall.gtCallMethHnd == eeFindHelper(CORINFO_HELP_RETHROW)) ||
-        (tree->gtCall.gtCallMethHnd == eeFindHelper(CORINFO_HELP_THROW_PLATFORM_NOT_SUPPORTED)))
+        (tree->gtCall.gtCallMethHnd == eeFindHelper(CORINFO_HELP_THROW_PLATFORM_NOT_SUPPORTED)) ||
+        (tree->gtCall.gtCallMethHnd == eeFindHelper(CORINFO_HELP_THROW_ARGTYPE_NOT_SUPPORTED)))
     {
         noway_assert(tree->gtFlags & GTF_CALL);
         noway_assert(tree->gtFlags & GTF_EXCEPT);
diff --git a/src/jit/utils.cpp b/src/jit/utils.cpp
index d506e916b825..257c38c1687b 100644
--- a/src/jit/utils.cpp
+++ b/src/jit/utils.cpp
@@ -1477,6 +1477,7 @@ void HelperCallProperties::init()
             case CORINFO_HELP_THROW_ARGUMENTEXCEPTION:
             case CORINFO_HELP_THROW_ARGUMENTOUTOFRANGEEXCEPTION:
             case CORINFO_HELP_THROW_PLATFORM_NOT_SUPPORTED:
+            case CORINFO_HELP_THROW_ARGTYPE_NOT_SUPPORTED:
 
                 break;
 
diff --git a/src/mscorlib/Resources/Strings.resx b/src/mscorlib/Resources/Strings.resx
index ef3821abf181..8fde41ac6d81 100644
--- a/src/mscorlib/Resources/Strings.resx
+++ b/src/mscorlib/Resources/Strings.resx
@@ -3697,4 +3697,7 @@
   <data name="HashCode_EqualityNotSupported" xml:space="preserve">
     <value>HashCode is a mutable struct and should not be compared with other HashCodes.</value>
   </data>
+  <data name="Arg_TypeNotSupported" xml:space="preserve">
+    <value>Specified type is not supported</value>
+  </data>
 </root>
diff --git a/src/vm/jithelpers.cpp b/src/vm/jithelpers.cpp
index 1611d585a504..975114e9e49d 100644
--- a/src/vm/jithelpers.cpp
+++ b/src/vm/jithelpers.cpp
@@ -5127,6 +5127,24 @@ HCIMPL0(void, JIT_ThrowPlatformNotSupportedException)
 }
 HCIMPLEND
 
+/*********************************************************************/
+HCIMPL0(void, JIT_ThrowArgTypeNotSupportedException)
+{
+    FCALL_CONTRACT;
+
+    /* Make no assumptions about the current machine state */
+    ResetCurrentContext();
+
+    FC_GC_POLL_NOT_NEEDED();    // throws always open up for GC
+
+    HELPER_METHOD_FRAME_BEGIN_ATTRIB_NOPOLL(Frame::FRAME_ATTR_EXCEPTION);    // Set up a frame
+
+    COMPlusThrow(kNotSupportedException, W("Arg_TypeNotSupported"));
+
+    HELPER_METHOD_FRAME_END();
+}
+HCIMPLEND
+
 /*********************************************************************/
 HCIMPL0(void, JIT_Overflow)
 {