diff --git a/HISTORY b/HISTORY
index 464685e..1d3c384 100644
--- a/HISTORY
+++ b/HISTORY
@@ -102,3 +102,4 @@ VDR Plugin 'satip' Revision History
 
 - Added configurable CI slots.
 - Fixed parsing of the setup values.
+- Added an option to disable sources via sources.conf.
diff --git a/README b/README
index fc016a6..ba651da 100644
--- a/README
+++ b/README
@@ -60,8 +60,8 @@ vdr -P 'satip -s 192.168.0.1|DVBS2-4|Octo1;192.168.0.2|DVBT2-4|Octo2'
 
 SAT>IP satellite positions (aka. signal sources) shall be defined via
 sources.conf. If the source description begins with a number, it's used
-as SAT>IP signal source selection parameter. Otherwise, the default
-parameter is one:
+as SAT>IP signal source selection parameter. A special number zero can
+be used to disable the source. Otherwise, the default parameter is one:
 
 S19.2E  Astra 1KR/1L/1M/2C
 => Signal source = 1
@@ -72,6 +72,9 @@ S19.2E  2
 S19.2E  3 Astra 1KR/1L/1M/2C
 => Signal source = 3
 
+S19.2E 0 Astra 1KR/1L/1M/2C
+=> Source is disabled
+
 A channel can be assigned into a specific SAT>IP frontend by giving the
 identifier number in RID field of a channels.conf entry:
 FE = RID % 100
diff --git a/device.c b/device.c
index 5cc290c..2b163fc 100644
--- a/device.c
+++ b/device.c
@@ -217,7 +217,11 @@ int cSatipDevice::SignalQuality(void) const
 
 bool cSatipDevice::ProvidesSource(int sourceP) const
 {
-  debug9("%s (%c) [device %u]", __PRETTY_FUNCTION__, cSource::ToChar(sourceP), deviceIndexM);
+  cSource *s = Sources.Get(sourceP);
+  debug9("%s (%c) desc='%s' [device %u]", __PRETTY_FUNCTION__, cSource::ToChar(sourceP), s ? s->Description() : "", deviceIndexM);
+  // source descriptions starting with '0' are disabled
+  if (s && s->Description() && (*(s->Description()) == '0'))
+     return false;
   if (!SatipConfig.IsOperatingModeOff() && !!cSatipDiscover::GetInstance()->GetServer(sourceP)) {
      int numDisabledSourcesM = SatipConfig.GetDisabledSourcesCount();
      for (int i = 0; i < numDisabledSourcesM; ++i) {