diff --git a/src/builtins/mips/builtins-mips.cc b/src/builtins/mips/builtins-mips.cc
index 61fb52016d..eb655115a6 100644
--- a/src/builtins/mips/builtins-mips.cc
+++ b/src/builtins/mips/builtins-mips.cc
@@ -1056,10 +1056,14 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ PushStandardFrame(closure);
 
-  // Reset code age.
-  DCHECK_EQ(0, BytecodeArray::kNoAgeBytecodeAge);
-  __ sb(zero_reg, FieldMemOperand(kInterpreterBytecodeArrayRegister,
-                                  BytecodeArray::kBytecodeAgeOffset));
+  // Reset code age and the OSR arming. The OSR field and BytecodeAgeOffset are
+  // 8-bit fields next to each other, so we could just optimize by writing a
+  // 16-bit. These static asserts guard our assumption is valid.
+  STATIC_ASSERT(BytecodeArray::kBytecodeAgeOffset ==
+                BytecodeArray::kOsrNestingLevelOffset + kCharSize);
+  STATIC_ASSERT(BytecodeArray::kNoAgeBytecodeAge == 0);
+  __ sh(zero_reg, FieldMemOperand(kInterpreterBytecodeArrayRegister,
+                                  BytecodeArray::kOsrNestingLevelOffset));
 
   // Load initial bytecode offset.
   __ li(kInterpreterBytecodeOffsetRegister,
diff --git a/src/builtins/mips64/builtins-mips64.cc b/src/builtins/mips64/builtins-mips64.cc
index 8af942e345..ec17eb8e60 100644
--- a/src/builtins/mips64/builtins-mips64.cc
+++ b/src/builtins/mips64/builtins-mips64.cc
@@ -1073,10 +1073,14 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ PushStandardFrame(closure);
 
-  // Reset code age.
-  DCHECK_EQ(0, BytecodeArray::kNoAgeBytecodeAge);
-  __ sb(zero_reg, FieldMemOperand(kInterpreterBytecodeArrayRegister,
-                                  BytecodeArray::kBytecodeAgeOffset));
+  // Reset code age and the OSR arming. The OSR field and BytecodeAgeOffset are
+  // 8-bit fields next to each other, so we could just optimize by writing a
+  // 16-bit. These static asserts guard our assumption is valid.
+  STATIC_ASSERT(BytecodeArray::kBytecodeAgeOffset ==
+                BytecodeArray::kOsrNestingLevelOffset + kCharSize);
+  STATIC_ASSERT(BytecodeArray::kNoAgeBytecodeAge == 0);
+  __ sh(zero_reg, FieldMemOperand(kInterpreterBytecodeArrayRegister,
+                                  BytecodeArray::kOsrNestingLevelOffset));
 
   // Load initial bytecode offset.
   __ li(kInterpreterBytecodeOffsetRegister,