diff --git a/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp b/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
index 9f657e8add..86fe879641 100644
--- a/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
@@ -50,13 +50,13 @@ ScriptFunction* ScriptFunction::create(GlobalObject& global_object, const FlyStr
     return global_object.heap().allocate<ScriptFunction>(global_object, global_object, name, body, move(parameters), m_function_length, parent_scope, *prototype, kind, is_strict, is_arrow_function);
 }
 
-ScriptFunction::ScriptFunction(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, EnvironmentRecord* parent_scope, Object& prototype, FunctionKind kind, bool is_strict, bool is_arrow_function)
+ScriptFunction::ScriptFunction(GlobalObject& global_object, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 function_length, EnvironmentRecord* parent_scope, Object& prototype, FunctionKind kind, bool is_strict, bool is_arrow_function)
     : Function(is_arrow_function ? vm().this_value(global_object) : Value(), {}, prototype)
     , m_name(name)
     , m_body(body)
     , m_parameters(move(parameters))
     , m_parent_scope(parent_scope)
-    , m_function_length(m_function_length)
+    , m_function_length(function_length)
     , m_kind(kind)
     , m_is_strict(is_strict)
     , m_is_arrow_function(is_arrow_function)