diff --git a/src/dvb/dvb_adapter.c b/src/dvb/dvb_adapter.c
index be8e32a0..00a53704 100644
--- a/src/dvb/dvb_adapter.c
+++ b/src/dvb/dvb_adapter.c
@@ -1273,13 +1273,14 @@ dvb_fe_opts(th_dvb_adapter_t *tda, const char *which)
   }
 
   if(!strcmp(which, "delsys")) {
-#if DVB_API_VERSION >= 5
     if(c & FE_CAN_QPSK) {
+#if DVB_API_VERSION >= 5
       fe_opts_add(a, "SYS_DVBS",     SYS_DVBS);
       fe_opts_add(a, "SYS_DVBS2",    SYS_DVBS2);
-    } else
+#else
+      fe_opts_add(a, "SYS_DVBS",     -1);
 #endif
-      fe_opts_add(a, "SYS_UNDEFINED",    SYS_UNDEFINED);
+    }
     return a;
   }