Index: trunk/src_plugins/io_hyp/parser.c
===================================================================
--- trunk/src_plugins/io_hyp/parser.c	(revision 24838)
+++ trunk/src_plugins/io_hyp/parser.c	(revision 24839)
@@ -1029,7 +1029,7 @@
 		pcb_message(PCB_MSG_ERROR, "error: negative arc precision\n");
 
 	/* A full circle is drawn using 'segments' segments; a 90 degree arc using segments/4. */
-	poly_points = pcb_round(segments * abs(beta - alpha) / (2 * M_PI));
+	poly_points = pcb_round(segments * fabs(beta - alpha) / (2 * M_PI));
 
 	/* Sanity checks */
 	if (poly_points < 1)