diff --git a/lld/COFF/Options.td b/lld/COFF/Options.td
index 94df47e07570..cc06fd5c488c 100644
--- a/lld/COFF/Options.td
+++ b/lld/COFF/Options.td
@@ -76,6 +76,7 @@ def deffile : Joined<["/", "-"], "def:">,
     HelpText<"Use module-definition file">;
 
 def debug : F<"debug">, HelpText<"Embed a symbol table in the image">;
+def debug_full : F<"debug:full">, Alias<debug>;
 def debugtype : P<"debugtype", "Debug Info Options">;
 def dll : F<"dll">, HelpText<"Create a DLL">;
 def driver : P<"driver", "Generate a Windows NT Kernel Mode Driver">;