diff --git a/src/runtime/FunctionObjectInlines.h b/src/runtime/FunctionObjectInlines.h
index 0a06bfe1a..46b595b4e 100644
--- a/src/runtime/FunctionObjectInlines.h
+++ b/src/runtime/FunctionObjectInlines.h
@@ -102,6 +102,7 @@ class FunctionObjectProcessCallGenerator {
         }
 
         ByteCodeBlock* blk = codeBlock->byteCodeBlock();
+        volatile ByteCodeBlock* rootedBlk = blk;
         Context* ctx = codeBlock->context();
         bool isStrict = codeBlock->isStrict();
         const size_t registerFileSize = blk->m_requiredTotalRegisterNumber;
diff --git a/src/runtime/ScriptSimpleFunctionObject.h b/src/runtime/ScriptSimpleFunctionObject.h
index 443d2580d..125bad171 100644
--- a/src/runtime/ScriptSimpleFunctionObject.h
+++ b/src/runtime/ScriptSimpleFunctionObject.h
@@ -60,6 +60,7 @@ class ScriptSimpleFunctionObject : public ScriptFunctionObject {
         }
 
         ByteCodeBlock* blk = codeBlock->byteCodeBlock();
+        volatile ByteCodeBlock* rootedBlk = blk;
         Context* ctx = codeBlock->context();
         const size_t registerSize = blk->m_requiredOperandRegisterNumber;
         const size_t programStart = reinterpret_cast<const size_t>(blk->m_code.data());
@@ -132,6 +133,7 @@ class ScriptSimpleFunctionObject : public ScriptFunctionObject {
         }
 
         ByteCodeBlock* blk = codeBlock->byteCodeBlock();
+        volatile ByteCodeBlock* rootedBlk = blk;
         Context* ctx = codeBlock->context();
         const size_t registerSize = blk->m_requiredOperandRegisterNumber;