diff --git a/gencat/tree.c b/gencat/tree.c
index f07deed..200a044 100644
--- a/gencat/tree.c
+++ b/gencat/tree.c
@@ -148,6 +148,8 @@ void read_desc(FILE *file)
 
 	while (fgets(buf, sizeof(buf), file)) {
 		lineno++;
+		if (buf[0] == '#')
+			continue;
 		p = strchr(buf, '\n');
 		if (p)
 			*p = 0;