diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
@@ -677,7 +677,7 @@
           if (log)
             dwarf->GetObjectFile()->GetModule()->LogMessage(
                 log,
-                "SymbolFileDWARF::ParseType (die = {0:16x}) {1} '{2}' "
+                "SymbolFileDWARF::ParseType (die = {0:x16}) {1} '{2}' "
                 "is Objective-C 'id' built-in type.",
                 die.GetOffset(), die.GetTagAsCString(), die.GetName());
           clang_type = m_ast.GetBasicType(eBasicTypeObjCID);