diff --git a/apps/dvbs2-rec b/apps/dvbs2-rec
index ef75d5e..2d9037a 100644
--- a/apps/dvbs2-rec
+++ b/apps/dvbs2-rec
@@ -114,14 +114,6 @@ class DVBS2RecTopBlock(gr.top_block, Qt.QWidget):
         self.flowgraph_connected = False
         self.gui_setup_complete = False
 
-        # Adjust the sample rate to an integer if necessary
-        if self.source == 'plutosdr' and not self.samp_rate.is_integer():
-            self.samp_rate = int(round(self.samp_rate))
-            gr.log.warn("An integer sample rate is required by the PlutoSDR. "
-                        "Setting rate to {:d} samples/sec.".format(
-                            self.samp_rate))
-            self.sym_rate = self.samp_rate / self.sps
-
         ##################################################
         # Flowgraph
         ##################################################
@@ -372,7 +364,7 @@ class DVBS2RecTopBlock(gr.top_block, Qt.QWidget):
 
         iio_pluto_source.set_len_tag_key('packet_len')
         iio_pluto_source.set_frequency(self.freq)
-        iio_pluto_source.set_samplerate(self.samp_rate)
+        iio_pluto_source.set_samplerate(int(self.samp_rate))
         iio_pluto_source.set_gain_mode(0, self.plutosdr['gain_mode'])
         iio_pluto_source.set_gain(0, self.plutosdr['manual_gain'])
         iio_pluto_source.set_quadrature(True)
@@ -828,6 +820,11 @@ def argument_parser():
             "argument --bladerf-bw should be greater than {} Hz".format(
                 min_bw))
 
+    samp_rate = (options.samp_rate if options.samp_rate is not None else
+                 options.sps * options.sym_rate)
+    if (options.source == "plutosdr" and not samp_rate.is_integer()):
+        parser.error("An integer sample rate is required by the PlutoSDR")
+
     return options
 
 
diff --git a/apps/dvbs2-rx b/apps/dvbs2-rx
index aca65a4..61596ef 100755
--- a/apps/dvbs2-rx
+++ b/apps/dvbs2-rx
@@ -142,14 +142,6 @@ class DVBS2RxTopBlock(gr.top_block, Qt.QWidget):
         self.flowgraph_connected = False
         self.gui_setup_complete = False
 
-        # Adjust the sample rate to an integer if necessary
-        if self.source == 'plutosdr' and not self.samp_rate.is_integer():
-            self.samp_rate = int(round(self.samp_rate))
-            gr.log.warn("An integer sample rate is required by the PlutoSDR. "
-                        "Setting rate to {:d} samples/sec.".format(
-                            self.samp_rate))
-            self.sym_rate = self.samp_rate / self.sps
-
         ##################################################
         # Flowgraph
         ##################################################
@@ -662,7 +654,7 @@ class DVBS2RxTopBlock(gr.top_block, Qt.QWidget):
 
         iio_pluto_source.set_len_tag_key('packet_len')
         iio_pluto_source.set_frequency(self.freq)
-        iio_pluto_source.set_samplerate(self.samp_rate)
+        iio_pluto_source.set_samplerate(int(self.samp_rate))
         iio_pluto_source.set_gain_mode(0, self.plutosdr['gain_mode'])
         iio_pluto_source.set_gain(0, self.plutosdr['manual_gain'])
         iio_pluto_source.set_quadrature(True)
@@ -1563,6 +1555,11 @@ def argument_parser():
             "argument --bladerf-bw should be greater than {} Hz".format(
                 min_bw))
 
+    samp_rate = (options.samp_rate if options.samp_rate is not None else
+                 options.sps * options.sym_rate)
+    if (options.source == "plutosdr" and not samp_rate.is_integer()):
+        parser.error("An integer sample rate is required by the PlutoSDR")
+
     return options
 
 
diff --git a/apps/dvbs2-tx b/apps/dvbs2-tx
index 3389eab..5859e1a 100755
--- a/apps/dvbs2-tx
+++ b/apps/dvbs2-tx
@@ -161,14 +161,6 @@ class dvbs2_tx(gr.top_block, Qt.QWidget):
         self.start_time = datetime.now()
         self.uptime = datetime.now() - self.start_time
 
-        # Adjust the sample rate to an integer if necessary
-        if self.sink == 'plutosdr' and not self.samp_rate.is_integer():
-            self.samp_rate = int(round(self.samp_rate))
-            gr.log.warn("An integer sample rate is required by the PlutoSDR. "
-                        "Setting rate to {:d} samples/sec.".format(
-                            self.samp_rate))
-            self.sym_rate = self.samp_rate / self.sps
-
         ##################################################
         # Flowgraph
         ##################################################
@@ -498,7 +490,7 @@ class dvbs2_tx(gr.top_block, Qt.QWidget):
         iio_pluto_sink.set_bandwidth(
             20000000)  # TODO confirm if required in auto mode
         iio_pluto_sink.set_frequency(self.freq)
-        iio_pluto_sink.set_samplerate(self.samp_rate)
+        iio_pluto_sink.set_samplerate(int(self.samp_rate))
         iio_pluto_sink.set_attenuation(0, self.plutosdr['attenuation'])
         iio_pluto_sink.set_filter_params('Auto', '', 0, 0)
 
@@ -1003,6 +995,11 @@ def argument_parser():
             "argument --bladerf-bw should be greater than {} Hz".format(
                 min_bw))
 
+    samp_rate = (options.samp_rate if options.samp_rate is not None else
+                 options.sps * options.sym_rate)
+    if (options.sink == "plutosdr" and not samp_rate.is_integer()):
+        parser.error("An integer sample rate is required by the PlutoSDR")
+
     return options