diff --git a/tools/c2man.pl b/tools/c2man.pl
index 3540911f0ac..bc256838d5d 100755
--- a/tools/c2man.pl
+++ b/tools/c2man.pl
@@ -1990,7 +1990,7 @@ sub output_sgml_dll_file($)
     if (@$_[$EXPORT_CALL] ne "forward" && @$_[$EXPORT_CALL] ne "extern" &&
         @$_[$EXPORT_CALL] ne "stub" && @$_[$EXPORT_CALL] ne "equate" &&
         @$_[$EXPORT_CALL] ne "variable" && @$_[$EXPORT_CALL] ne "fake" &&
-        @$_[$EXPORT_FLAGS] & $FLAGS_DOCUMENTED)
+        @$_[$EXPORT_FLAGS] & $FLAG_DOCUMENTED)
     {
       # A documented function
       push (@source_files,@$_[$EXPORT_IMPNAME]);