Index: trunk/src_plugins/io_dsn/read.c
===================================================================
--- trunk/src_plugins/io_dsn/read.c	(revision 35170)
+++ trunk/src_plugins/io_dsn/read.c	(revision 35171)
@@ -1157,7 +1157,7 @@
 		return -1;
 	}
 
-	if (aper != 0) {
+	if (aper > 10) {
 		double dv;
 		long n;
 		rnd_polo_t *p;