diff --git a/opp_env/database/inet.py b/opp_env/database/inet.py
index 6e0acea2..0e96f71d 100644
--- a/opp_env/database/inet.py
+++ b/opp_env/database/inet.py
@@ -108,7 +108,7 @@ def make_inet_project_description(inet_version, omnetpp_versions):
         "smoke_test_commands": [
             "cd examples/adhoc/ieee80211",
             """if [ "$mode" = "debug" ]; then DBG_SUFFIX="_dbg"; fi""",
-            "./run -c Ping1 -u Cmdenv --sim-time-limit=60s >/dev/null" if inet_version < "4.0" else
+            "./run -c Ping1 -u Cmdenv --sim-time-limit=60s --check-signals=false > /dev/null" if inet_version < "4.0" else
             "inet$DBG_SUFFIX -c Ping1 -u Cmdenv --sim-time-limit=60s >/dev/null"
         ],
         "options": {
@@ -218,7 +218,7 @@ def get_all_inet_released_versions():
         ["3.6.0", ["5.1.*"]], # with omnetpp-5.2: Ieee80211ControlInfoDescr.h:16:6: error: Version mismatch! Probably this file was generated by an earlier version of nedtool
         ["3.5.x", ["5.1.*"]],
         ["3.5.0", ["5.1.*"]],
-        ["3.4.0", ["5.1.*", "5.0.*"]],
+        ["3.4.0", ["5.1.*"]], # with omnetpp-5.0.*: cannot build. error: use of undeclared identifier 'cResultFilterType'; did you mean 'cResultFilter'?
         ["3.3.0", ["4.6.*", "5.0.*", "5.1.*"]], # with omnetpp-5.2.1: RoutingTableRecorder.cc:296:37: error: expected ')' (due to missing INT64_PRINTF_FORMAT symbol?)
         ["3.2.4", ["4.6.*", "5.0.*", "5.1.*"]], # # with omnetpp-5.2.1: RoutingTableRecorder.cc:296:37: error: expected ')' (due to missing INT64_PRINTF_FORMAT symbol?)
         ["3.2.3", ["4.6.*"]], # with omnetpp-5.0: Ieee80211OldMac.cc:38:21: error: no member named 'Ieee80211OldMac' in namespace 'inet'; MAYBE Register_Enum issue?