diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 8313b49..f5c2971 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1844,7 +1844,8 @@
     my $file = shift;
 
     $x =~ s@/\*.*?\*/@@gos;	# strip comments.
-    $x =~ s@#\s*define\s+[^;]*;@@gos; # strip #define macros inside enums
+    # strip #define macros inside enums
+    $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
 
     if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
 	$declaration_name = $1;