diff --git a/oscar/SleepLib/loader_plugins/prs1_loader.cpp b/oscar/SleepLib/loader_plugins/prs1_loader.cpp
index a8ddff75..a87598ec 100644
--- a/oscar/SleepLib/loader_plugins/prs1_loader.cpp
+++ b/oscar/SleepLib/loader_plugins/prs1_loader.cpp
@@ -2713,6 +2713,9 @@ void PRS1Import::CreateEventChannels(const PRS1DataChunk* chunk)
 
 EventList* PRS1Import::GetImportChannel(ChannelID channel)
 {
+    if (!channel) {
+        qCritical() << this->sessionid << "channel in import table has not been added to schema!";
+    }
     EventList* C = m_importChannels[channel];
     if (C == nullptr) {
         C = session->AddEventList(channel, EVL_Event);
diff --git a/oscar/SleepLib/schema.cpp b/oscar/SleepLib/schema.cpp
index e31cc165..69f5bc1e 100644
--- a/oscar/SleepLib/schema.cpp
+++ b/oscar/SleepLib/schema.cpp
@@ -338,8 +338,8 @@ void init()
 //  <channel id="0x111e" class="data" name="TestChan1" details="Debugging Channel #1" label="Test #1" unit="" color="pink"/>
 //  <channel id="0x111f" class="data" name="TestChan2" details="Debugging Channel #2" label="Test #2" unit="" color="blue"/>
 
-//  schema::channel.add(GRP_CPAP, ch=new Channel(CPAP_Test1 = 0x111e, DATA, MT_CPAP, SESSION, STR_GRAPH_TestChan1, QObject::tr("Debugging channel #1"), QObject::tr("Top secret internal stuff you're not supposed to see ;)"), QObject::tr("Test #1"),  QString(), INTEGER,  QColor("pink")));
-//  schema::channel.add(GRP_CPAP, ch=new Channel(CPAP_Test2 = 0x111f, DATA, MT_CPAP, SESSION, STR_GRAPH_TestChan2, QObject::tr("Debugging channel #2"), QObject::tr("Top secret internal stuff you're not supposed to see ;)"), QObject::tr("Test #2"),  QString(), INTEGER,  Qt::blue));
+    schema::channel.add(GRP_CPAP, ch=new Channel(CPAP_Test1 = 0x111e, DATA, MT_CPAP, SESSION, STR_GRAPH_TestChan1, QObject::tr("Debugging channel #1"), QObject::tr("Top secret internal stuff you're not supposed to see ;)"), QObject::tr("Test #1"),  QString(), INTEGER,  QColor("pink")));
+    schema::channel.add(GRP_CPAP, ch=new Channel(CPAP_Test2 = 0x111f, DATA, MT_CPAP, SESSION, STR_GRAPH_TestChan2, QObject::tr("Debugging channel #2"), QObject::tr("Top secret internal stuff you're not supposed to see ;)"), QObject::tr("Test #2"),  QString(), INTEGER,  Qt::blue));
 
     RMS9_E01 = schema::channel["RMS9_E01"].id();
     RMS9_E02 = schema::channel["RMS9_E02"].id();