diff --git a/plugins/samplesource/airspyhf/airspyhfgui.cpp b/plugins/samplesource/airspyhf/airspyhfgui.cpp
index e8e31681f..745e3951b 100644
--- a/plugins/samplesource/airspyhf/airspyhfgui.cpp
+++ b/plugins/samplesource/airspyhf/airspyhfgui.cpp
@@ -284,7 +284,7 @@ void AirspyHFGui::on_sampleRate_currentIndexChanged(int index)
 
 void AirspyHFGui::on_decim_currentIndexChanged(int index)
 {
-	if ((index < 0) || (index > 5))
+	if ((index < 0) || (index > 6))
 		return;
 	m_settings.m_log2Decim = index;
 	sendSettings();
diff --git a/plugins/samplesource/airspyhf/airspyhfgui.ui b/plugins/samplesource/airspyhf/airspyhfgui.ui
index f08fe7d30..d28e3066b 100644
--- a/plugins/samplesource/airspyhf/airspyhfgui.ui
+++ b/plugins/samplesource/airspyhf/airspyhfgui.ui
@@ -35,16 +35,7 @@
    <property name="spacing">
     <number>3</number>
    </property>
-   <property name="leftMargin">
-    <number>2</number>
-   </property>
-   <property name="topMargin">
-    <number>2</number>
-   </property>
-   <property name="rightMargin">
-    <number>2</number>
-   </property>
-   <property name="bottomMargin">
+   <property name="margin">
     <number>2</number>
    </property>
    <item>
@@ -384,6 +375,11 @@
          <string>32</string>
         </property>
        </item>
+       <item>
+        <property name="text">
+         <string>64</string>
+        </property>
+       </item>
       </widget>
      </item>
      <item>