Index: dialogs/dlg_library_param.c
===================================================================
--- dialogs/dlg_library_param.c	(revision 36657)
+++ dialogs/dlg_library_param.c	(revision 36658)
@@ -338,6 +338,7 @@
 				rnd_snprintf(buff, sizeof(buff), "%.09$$mH", a->val.crd);
 				break;
 			default:;
+				val = NULL;
 		}
 
 		if (val == NULL)