diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
index 5d839c40fd3f..ef3d2cf4d550 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
@@ -288,7 +288,7 @@ void DWARFUnit::SetAddrBase(dw_addr_t addr_base,
   m_base_obj_offset = base_obj_offset;
 }
 
-void DWARFUnit::ClearDIEs(bool keep_compile_unit_die) {
+void DWARFUnit::ClearDIEs() {
   if (m_die_array.size() > 1) {
     // std::vectors never get any smaller when resized to a smaller size, or
     // when clear() or erase() are called, the size will report that it is
@@ -300,12 +300,11 @@ void DWARFUnit::ClearDIEs(bool keep_compile_unit_die) {
     // Save at least the compile unit DIE
     DWARFDebugInfoEntry::collection tmp_array;
     m_die_array.swap(tmp_array);
-    if (keep_compile_unit_die)
-      m_die_array.push_back(tmp_array.front());
+    m_die_array.push_back(tmp_array.front());
   }
 
   if (m_dwo_symbol_file)
-    m_dwo_symbol_file->GetCompileUnit()->ClearDIEs(keep_compile_unit_die);
+    m_dwo_symbol_file->GetCompileUnit()->ClearDIEs();
 }
 
 void DWARFUnit::BuildAddressRangeTable(SymbolFileDWARF *dwarf,
@@ -403,7 +402,7 @@ void DWARFUnit::BuildAddressRangeTable(SymbolFileDWARF *dwarf,
   // Keep memory down by clearing DIEs if this generate function caused them to
   // be parsed
   if (clear_dies)
-    ClearDIEs(true);
+    ClearDIEs();
 }
 
 lldb::ByteOrder DWARFUnit::GetByteOrder() const {
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h
index 322e4fcda059..5a8932cfa70f 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.h
@@ -99,7 +99,7 @@ public:
   dw_addr_t GetRangesBase() const { return m_ranges_base; }
   void SetAddrBase(dw_addr_t addr_base, dw_addr_t ranges_base,
                    dw_offset_t base_obj_offset);
-  void ClearDIEs(bool keep_compile_unit_die);
+  void ClearDIEs();
   void BuildAddressRangeTable(SymbolFileDWARF *dwarf,
                               DWARFDebugAranges *debug_aranges);
 
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp b/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
index 719478537ac1..b089b0ddeae5 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
@@ -96,7 +96,7 @@ void ManualDWARFIndex::Index() {
   //----------------------------------------------------------------------
   for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) {
     if (clear_cu_dies[cu_idx])
-      debug_info.GetCompileUnitAtIndex(cu_idx)->ClearDIEs(true);
+      debug_info.GetCompileUnitAtIndex(cu_idx)->ClearDIEs();
   }
 }