diff --git a/auto/bin/make_def_var.pl b/auto/bin/make_def_var.pl
index ae007a6..2b2a1d9 100755
--- a/auto/bin/make_def_var.pl
+++ b/auto/bin/make_def_var.pl
@@ -19,13 +19,13 @@ our $type = shift;
 
 if (@ARGV)
 {
-    @extlist = @ARGV;
+	@extlist = @ARGV;
 
-    foreach my $ext (sort @extlist)
-    {
-        my ($extname, $exturl, $extstring, $types, $tokens, $functions, $exacts) = parse_ext($ext);
-        my $extvar = $extname;
-        $extvar =~ s/GL(X*)_/GL$1EW_/;
-        print "GLboolean " . prefix_varname($extvar) . " = GL_FALSE;\n";
-    }
+	foreach my $ext (sort @extlist)
+	{
+		my ($extname, $exturl, $extstring, $types, $tokens, $functions, $exacts) = parse_ext($ext);
+		my $extvar = $extname;
+		$extvar =~ s/GL(X*)_/GL$1EW_/;
+		print "GLboolean " . prefix_varname($extvar) . " = GL_FALSE;\n";
+	}
 }