diff --git a/src/blackgui/components/dbownmodelscomponent.cpp b/src/blackgui/components/dbownmodelscomponent.cpp
index 8b7f461e9..3dea8722c 100644
--- a/src/blackgui/components/dbownmodelscomponent.cpp
+++ b/src/blackgui/components/dbownmodelscomponent.cpp
@@ -38,18 +38,16 @@ namespace BlackGui
             connect(ui->tvp_OwnAircraftModels, &CAircraftModelView::requestUpdate, this, &CDbOwnModelsComponent::ps_requestOwnModelsUpdate);
 
             this->m_lastInteractions.synchronize();
+
+            // should be single simulator or no simulator (default)
             const CSimulatorInfo sim = this->m_lastInteractions.getCopy().getLastSimulatorSelection();
+            BLACK_VERIFY_X(!sim.isMultipleSimulators(), Q_FUNC_INFO, "Should be single simulator or default");
             if (sim.isSingleSimulator())
             {
                 // if we have already use this before, use it again, but only from cache
                 this->initModelLoader(sim);
                 this->m_modelLoader->startLoading(IAircraftModelLoader::CacheOnly);
             }
-            else
-            {
-                BLACK_VERIFY_X(false, Q_FUNC_INFO, "Missing sim");
-            }
-
             ui->tvp_OwnAircraftModels->setCustomMenu(new CMergeWithDbDataMenu(ui->tvp_OwnAircraftModels, this->modelLoader(), false));
             ui->tvp_OwnAircraftModels->setCustomMenu(new CLoadModelsMenu(this, true));
         }
diff --git a/src/blackmisc/simulation/simulatorinfo.cpp b/src/blackmisc/simulation/simulatorinfo.cpp
index 8e84905c5..a738cd38d 100644
--- a/src/blackmisc/simulation/simulatorinfo.cpp
+++ b/src/blackmisc/simulation/simulatorinfo.cpp
@@ -77,6 +77,11 @@ namespace BlackMisc
             return m_simulator == 0;
         }
 
+        bool CSimulatorInfo::isMultipleSimulators() const
+        {
+            return this->numberSimulators() > 1;
+        }
+
         bool CSimulatorInfo::isAllSimulators() const
         {
             return fsx() && fs9() && xplane() && p3d();
diff --git a/src/blackmisc/simulation/simulatorinfo.h b/src/blackmisc/simulation/simulatorinfo.h
index 20f9c1c6a..e043d49d3 100644
--- a/src/blackmisc/simulation/simulatorinfo.h
+++ b/src/blackmisc/simulation/simulatorinfo.h
@@ -89,6 +89,9 @@ namespace BlackMisc
             //! No simulator?
             bool isNoSimulator() const;
 
+            //! Represents > 1 simulator
+            bool isMultipleSimulators() const;
+
             //! Is all simulators?
             bool isAllSimulators() const;