diff --git a/src/coreclr/inc/corinfo.h b/src/coreclr/inc/corinfo.h
index 5b2eb0798cc4ff..2128b8cabe7c32 100644
--- a/src/coreclr/inc/corinfo.h
+++ b/src/coreclr/inc/corinfo.h
@@ -594,8 +594,6 @@ enum CorInfoHelpFunc
     CORINFO_HELP_VALIDATE_INDIRECT_CALL,    // CFG: Validate function pointer
     CORINFO_HELP_DISPATCH_INDIRECT_CALL,    // CFG: Validate and dispatch to pointer
 
-    CORINFO_HELP_ENSURE_NONHEAP,            // Ensure that the target was not in the heap.
-
     CORINFO_HELP_COUNT,
 };
 
diff --git a/src/coreclr/inc/jithelpers.h b/src/coreclr/inc/jithelpers.h
index 9976016820dd90..38114a9bbfcada 100644
--- a/src/coreclr/inc/jithelpers.h
+++ b/src/coreclr/inc/jithelpers.h
@@ -341,7 +341,6 @@
     JITHELPER(CORINFO_HELP_VALIDATE_INDIRECT_CALL, NULL, METHOD__NIL)
     JITHELPER(CORINFO_HELP_DISPATCH_INDIRECT_CALL, NULL, METHOD__NIL)
 #endif
-    JITHELPER(CORINFO_HELP_ENSURE_NONHEAP, JIT_EnsureNonHeapTarget,METHOD__NIL)
 
 #undef JITHELPER
 #undef DYNAMICJITHELPER
diff --git a/src/coreclr/jit/compiler.h b/src/coreclr/jit/compiler.h
index 0757280bd3aa89..b2abdfdc0498f7 100644
--- a/src/coreclr/jit/compiler.h
+++ b/src/coreclr/jit/compiler.h
@@ -10795,7 +10795,6 @@ class Compiler
         STRESS_MODE(POISON_IMPLICIT_BYREFS)                                                     \
         STRESS_MODE(STORE_BLOCK_UNROLLING)                                                      \
         STRESS_MODE(THREE_OPT_LAYOUT)                                                           \
-        STRESS_MODE(NONHEAP_RET_BUFFER)                                                         \
         STRESS_MODE(COUNT)
 
     enum                compStressArea
diff --git a/src/coreclr/jit/flowgraph.cpp b/src/coreclr/jit/flowgraph.cpp
index 892f0919df26e5..369b7b7a30241c 100644
--- a/src/coreclr/jit/flowgraph.cpp
+++ b/src/coreclr/jit/flowgraph.cpp
@@ -2457,17 +2457,6 @@ PhaseStatus Compiler::fgAddInternal()
 
     noway_assert(!dbgHandle || !pDbgHandle);
 
-#if DEBUG
-    // JitStress: Insert a helper call to ensure that the return buffer is not on the GC heap.
-    if (compStressCompile(STRESS_NONHEAP_RET_BUFFER, 50) && (info.compRetBuffArg != BAD_VAR_NUM) &&
-        !opts.IsReadyToRun())
-    {
-        GenTree* retBuffAddr = gtNewLclvNode(info.compRetBuffArg, TYP_BYREF);
-        fgNewStmtAtBeg(fgFirstBB, gtNewHelperCallNode(CORINFO_HELP_ENSURE_NONHEAP, TYP_VOID, retBuffAddr));
-        madeChanges = true;
-    }
-#endif
-
     if (dbgHandle || pDbgHandle)
     {
         // Test the JustMyCode VM global state variable
diff --git a/src/coreclr/jit/utils.cpp b/src/coreclr/jit/utils.cpp
index bb0d62af848f77..b308408a47e5d5 100644
--- a/src/coreclr/jit/utils.cpp
+++ b/src/coreclr/jit/utils.cpp
@@ -1770,7 +1770,6 @@ void HelperCallProperties::init()
                 isNoGC = true;
                 FALLTHROUGH;
             case CORINFO_HELP_ASSIGN_REF_ENSURE_NONHEAP:
-            case CORINFO_HELP_ENSURE_NONHEAP:
             case CORINFO_HELP_BULK_WRITEBARRIER:
                 mutatesHeap = true;
                 break;
diff --git a/src/coreclr/tools/Common/JitInterface/CorInfoHelpFunc.cs b/src/coreclr/tools/Common/JitInterface/CorInfoHelpFunc.cs
index 88cd51c01e16b9..04bca41e476671 100644
--- a/src/coreclr/tools/Common/JitInterface/CorInfoHelpFunc.cs
+++ b/src/coreclr/tools/Common/JitInterface/CorInfoHelpFunc.cs
@@ -284,8 +284,6 @@ which is the right helper to use to allocate an object of a given type. */
         CORINFO_HELP_VALIDATE_INDIRECT_CALL,    // CFG: Validate function pointer
         CORINFO_HELP_DISPATCH_INDIRECT_CALL,    // CFG: Validate and dispatch to pointer
 
-        CORINFO_HELP_ENSURE_NONHEAP,            // Ensure that the target was not in the heap.
-
         CORINFO_HELP_COUNT,
     }
 }
diff --git a/src/coreclr/vm/gchelpers.cpp b/src/coreclr/vm/gchelpers.cpp
index 048e840728feda..f002fbe1b59a27 100644
--- a/src/coreclr/vm/gchelpers.cpp
+++ b/src/coreclr/vm/gchelpers.cpp
@@ -1466,16 +1466,6 @@ extern "C" HCIMPL2_RAW(VOID, JIT_WriteBarrierEnsureNonHeapTarget, Object **dst,
 }
 HCIMPLEND_RAW
 
-extern "C" HCIMPL1_RAW(VOID, JIT_EnsureNonHeapTarget, void *dst)
-{
-    STATIC_CONTRACT_MODE_COOPERATIVE;
-    STATIC_CONTRACT_THROWS;
-    STATIC_CONTRACT_GC_NOTRIGGER;
-
-    _ASSERT(!GCHeapUtilities::GetGCHeap()->IsHeapPointer(dst));
-}
-HCIMPLEND_RAW
-
 // This function sets the card table with the granularity of 1 byte, to avoid ghost updates
 //    that could occur if multiple threads were trying to set different bits in the same card.
 
diff --git a/src/coreclr/vm/jitinterface.h b/src/coreclr/vm/jitinterface.h
index 1f8986619ab303..7f1835e458a53a 100644
--- a/src/coreclr/vm/jitinterface.h
+++ b/src/coreclr/vm/jitinterface.h
@@ -235,7 +235,6 @@ extern "C" FCDECL2(VOID, JIT_CheckedWriteBarrier, Object **dst, Object *ref);
 
 extern "C" FCDECL2(VOID, JIT_WriteBarrier, Object **dst, Object *ref);
 extern "C" FCDECL2(VOID, JIT_WriteBarrierEnsureNonHeapTarget, Object **dst, Object *ref);
-extern "C" FCDECL1(VOID, JIT_EnsureNonHeapTarget, void *dst);
 
 // ARM64 JIT_WriteBarrier uses special ABI and thus is not callable directly
 // Copied write barriers must be called at a different location