diff --git a/src/include/ipxe/efi/import.pl b/src/include/ipxe/efi/import.pl
index 7177768a7..ec986025d 100755
--- a/src/include/ipxe/efi/import.pl
+++ b/src/include/ipxe/efi/import.pl
@@ -67,7 +67,7 @@ sub try_import_file {
 	s/\s*$//g;
 	chomp;
 	# Update include lines, and record included files
-	if ( s/^\#include\s+[<\"](\S+)[>\"]/\#include <ipxe\/efi\/$1>/ ) {
+	if ( s/^(\s*\#include\s+)[<\"](\S+)[>\"]/$1<ipxe\/efi\/$2>/ ) {
 	  push @dependencies, $1;
 	}
 	# Check for BSD licence statement