diff --git a/lldb/source/Symbol/Function.cpp b/lldb/source/Symbol/Function.cpp
index 6114eccd935ee..2be1e389aa1d0 100644
--- a/lldb/source/Symbol/Function.cpp
+++ b/lldb/source/Symbol/Function.cpp
@@ -275,7 +275,7 @@ Function::~Function() = default;
 void Function::GetStartLineSourceInfo(SupportFileSP &source_file_sp,
                                       uint32_t &line_no) {
   line_no = 0;
-  source_file_sp.reset();
+  source_file_sp = std::make_shared<SupportFile>();
 
   if (m_comp_unit == nullptr)
     return;