diff --git a/lib/icinga/checkable-downtime.cpp b/lib/icinga/checkable-downtime.cpp
index 70a143f16..2fea94069 100644
--- a/lib/icinga/checkable-downtime.cpp
+++ b/lib/icinga/checkable-downtime.cpp
@@ -127,6 +127,13 @@ void Checkable::RemoveDowntime(const String& id, bool cancelled, const String& a
 
 	int legacy_id = downtime->GetLegacyId();
 
+	String config_owner = downtime->GetConfigOwner();
+
+	if (!config_owner.IsEmpty()) {
+		Log(LogWarning, "icinga", "Cannot remove downtime with ID '" + Convert::ToString(legacy_id) + "'. It is owned by scheduled downtime object '" + config_owner + "'");
+		return;
+	}
+
 	downtimes->Remove(id);
 
 	{
diff --git a/lib/icinga/checkable.cpp b/lib/icinga/checkable.cpp
index d60ffaf44..c1d187735 100644
--- a/lib/icinga/checkable.cpp
+++ b/lib/icinga/checkable.cpp
@@ -84,6 +84,9 @@ void Checkable::OnStateLoaded(void)
 	}
 
 	BOOST_FOREACH(const String& id, ids) {
+		/* override config owner to clear downtimes once */
+		Downtime::Ptr downtime = GetDowntimeByID(id);
+		downtime->SetConfigOwner(Empty);
 		RemoveDowntime(id, true);
 	}
 }
diff --git a/lib/icinga/downtime.ti b/lib/icinga/downtime.ti
index b1d8ee658..4dc05382e 100644
--- a/lib/icinga/downtime.ti
+++ b/lib/icinga/downtime.ti
@@ -20,6 +20,7 @@ safe class Downtime
 	};
 	[state] int legacy_id;
 	[state] bool was_cancelled;
+	[state] String config_owner;
 };
 
 }
diff --git a/lib/icinga/scheduleddowntime.cpp b/lib/icinga/scheduleddowntime.cpp
index 8d46ba309..b1e9c81ae 100644
--- a/lib/icinga/scheduleddowntime.cpp
+++ b/lib/icinga/scheduleddowntime.cpp
@@ -19,6 +19,7 @@
 
 #include "icinga/scheduleddowntime.h"
 #include "icinga/legacytimeperiod.h"
+#include "icinga/downtime.h"
 #include "base/timer.h"
 #include "base/dynamictype.h"
 #include "base/initialize.h"
@@ -153,7 +154,10 @@ void ScheduledDowntime::CreateNextDowntime(void)
 		return;
 	}
 
-	GetCheckable()->AddDowntime(GetAuthor(), GetComment(),
+	String uid = GetCheckable()->AddDowntime(GetAuthor(), GetComment(),
 	    segment.first, segment.second,
 	    GetFixed(), String(), GetDuration(), GetName());
+
+	Downtime::Ptr downtime = Checkable::GetDowntimeByID(uid);
+	downtime->SetConfigOwner(GetName());
 }
diff --git a/test/config/5980.conf b/test/config/5980.conf
new file mode 100644
index 000000000..ea53c000f
--- /dev/null
+++ b/test/config/5980.conf
@@ -0,0 +1,50 @@
+
+
+object Host "5980-host" {
+  import "test-generic-host"
+  address = "127.0.0.1"
+}
+
+object Service "5980-service1" {
+  import "test-generic-service"
+  host_name = "5980-host"
+  check_command = "dummy"
+}
+
+object Service "5980-service2" {
+  import "test-generic-service"
+  host_name = "5980-host"
+  check_command = "dummy"
+}
+
+
+template ScheduledDowntime "5980-test-downtime" {
+  author = "icingaadmin"
+  comment = "Scheduled downtime for tests"
+
+  ranges = {
+    monday = "02:00-03:00"
+    tuesday = "02:00-03:00"
+    wednesday = "02:00-03:00"
+    thursday = "02:00-03:00"
+    friday = "02:00-03:00"
+    saturday = "02:00-03:00"
+    sunday = "02:00-03:00"
+  }
+}
+
+
+apply ScheduledDowntime "5980-test-service-downtime" to Host {
+  import "5980-test-downtime"
+  comment = "Scheduled host downtime for tests"
+
+  assign where host.name == "5980-host"
+}
+
+apply ScheduledDowntime "5980-test-service-downtime" to Service {
+  import "5980-test-downtime"
+  comment = "Scheduled service downtime for tests"
+
+  assign where host.name == "5980-host"
+}
+