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diff --git a/plugins/channelrx/udpsink/readme.md b/plugins/channelrx/udpsink/readme.md
index 7604b0ea0..b98dbe43b 100644
--- a/plugins/channelrx/udpsink/readme.md
+++ b/plugins/channelrx/udpsink/readme.md
@@ -1,8 +1,8 @@
-<h1>UDP source plugin</h1>
+<h1>UDP sink plugin</h1>
 
 <h2>Introduction</h2>
 
-By "source" one should understand a source of samples for the outside of SDRangel application. An UDP connection is established from the plugin to the given address and port and samples are directed to it.
+By "sink" one should understand a sink for samples coming from the device baseband. An UDP connection is established from the plugin to the given address and port and samples are directed to it.
 
 The UDP block size or UDP payload size is fixed at 512 bytes.
 
@@ -12,7 +12,7 @@ This plugin is available for Linux and Mac O/S only.
 
 <h2>Interface</h2>
 
-![UDP Source plugin GUI](../../../doc/img/UDPsrc_plugin.png)
+![UDP Sink plugin GUI](../../../doc/img/UDPsink_plugin.png)
 
 <h3>1: Frequency shift from center frequency of reception</h3>
 
@@ -68,7 +68,7 @@ This is the maximum expected FM deviation in Hz for NFM demodulated samples. The
 
 <h3>9: AGC and audio feedback control</h3>
 
-![UDP Source plugin GUI AGC](../../../doc/img/UDPsrc_plugin_agc.png)
+![UDP Sink plugin GUI AGC](../../../doc/img/UDPsink_plugin_agc.png)
 
 <h4>9.1: Toggle AGC</h4>
 
@@ -106,7 +106,7 @@ This gain is applied to the samples just before they are sent via UDP. The gain
 
 <h3>13: Squelch</h3>
 
-![UDP Source plugin GUI Squelch](../../../doc/img/UDPsrc_plugin_sq.png)
+![UDP Sink plugin GUI Squelch](../../../doc/img/UDPsink_plugin_sq.png)
 
 <h4>13.1: Squelch indicator</h4>
 
diff --git a/plugins/channeltx/udpsource/readme.md b/plugins/channeltx/udpsource/readme.md
index 792a51540..69ddd8b1b 100644
--- a/plugins/channeltx/udpsource/readme.md
+++ b/plugins/channeltx/udpsource/readme.md
@@ -1,8 +1,8 @@
-<h1>UDP sink plugin</h1>
+<h1>UDP Source plugin</h1>
 
 <h2>Introduction</h2>
 
-By "sink" one should understand a sink of samples for the outside of SDRangel application. An external application establishes an UDP connection to the plugin at the given address and port and samples are directed to it. In fact it can also come from SDRangel itself using the UDP source plugin
+By "source" one should understand a source of samples that feed the baseband of the transmitting device. An external application establishes an UDP connection to the plugin at the given address and port and samples are directed to it. In fact it can also come from SDRangel itself using the UDP source plugin
 
 The UDP block size or UDP payload size is optimized for 512 bytes but other sizes are acceptable.
 
@@ -10,7 +10,7 @@ This plugin is available for Linux and Mac O/S only.
 
 <h2>Interface</h2>
 
-![UDP Sink plugin GUI](../../../doc/img/UDPsink_plugin.png)
+![UDP Source plugin GUI](../../../doc/img/UDPsource_plugin.png)
 
 <h3>1: Frequency shift from center frequency of reception</h3>