diff --git a/lldb/include/lldb/lldb-enumerations.h b/lldb/include/lldb/lldb-enumerations.h
index adcdcfb19eca..8d31a64f4f5b 100644
--- a/lldb/include/lldb/lldb-enumerations.h
+++ b/lldb/include/lldb/lldb-enumerations.h
@@ -823,7 +823,7 @@ enum FrameComparison {
 // relative data and the object file might be able to tell us that an address
 // in code is data.
 //----------------------------------------------------------------------
-enum AddressClass {
+enum class AddressClass {
   eInvalid,
   eUnknown,
   eCode,