diff --git a/genex/genex.c b/genex/genex.c
index e23b739..d3b6c8d 100644
--- a/genex/genex.c
+++ b/genex/genex.c
@@ -23,11 +23,12 @@
 static void usage(const char *name)
 {
 	fprintf(stderr,
-"usage: %s [-d] [-P] [-L libdir ...] [-l lib ...] hierarchy\n"
+"usage: %s [-d] [-p] [-P] [-L libdir ...] [-l lib ...] hierarchy\n"
 "       %*s [descriptions ...]\n\n"
 "  -d         dump the tree instead of generating a PDF\n"
 "  -L libdir  search all libraries in the specified directory\n"
 "  -l lib     search the specified component library\n"
+"  -p         use portrait orientation; default: landscape\n"
 "  -P         generate Postscript instead of PDF (mainly for debugging)\n"
     , name, (int) strlen(name), "");
 	exit(1);
@@ -38,10 +39,10 @@ int main(int argc, char **argv)
 {
 	FILE *file;
 	int c;
-	int dump = 0, postscript = 0;
+	int dump = 0, postscript = 0, portrait = 0;
 	char **arg;
 
-	while ((c = getopt(argc, argv, "dL:l:P")) != EOF)
+	while ((c = getopt(argc, argv, "dL:l:Pp")) != EOF)
 		switch (c) {
 		case 'd':
 			dump = 1;
@@ -55,6 +56,9 @@ int main(int argc, char **argv)
 		case 'P':
 			postscript = 1;
 			break;
+		case 'p':
+			portrait = 1;
+			break;
 		default:
 			usage(*argv);
 		}
@@ -88,6 +92,6 @@ int main(int argc, char **argv)
 	if (dump)
 		dump_tree();
 	else
-		make_pdf(!postscript);
+		make_pdf(!postscript, portrait);
 	return 0;
 }
diff --git a/genex/pdf.c b/genex/pdf.c
index 55b7d5c..9a9f5a8 100644
--- a/genex/pdf.c
+++ b/genex/pdf.c
@@ -30,7 +30,7 @@ static struct format {
 	} name, path, lib, comment;
 	int comment_line_skip;
 } landscape = {
-	.file_setup	= "",
+	.file_setup	= "%%Orientation: Landscape",
 	.overlay_setup	= "90 rotate",
 	.comp_setup	= "",
 	.left		= 20,
@@ -211,15 +211,15 @@ static void convert_tree(const struct node *node, FILE *out)
 }
 
 
-void make_pdf(int pdf)
+void make_pdf(int pdf, int use_portrait)
 {
 	FILE *out;
 	int res;
 
-	if (0)
-		format = landscape;
-	else
+	if (use_portrait)
 		format = portrait;
+	else
+		format = landscape;
 	if (pdf)
 		out = popen(
 		    "gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=- "
diff --git a/genex/pdf.h b/genex/pdf.h
index 0a19830..1f2816b 100644
--- a/genex/pdf.h
+++ b/genex/pdf.h
@@ -12,6 +12,6 @@
 #ifndef	PDF_H
 #define	PDF_H
 
-void make_pdf(int pdf);
+void make_pdf(int pdf, int use_portrait);
 
 #endif /* !PDF_H */