diff --git a/src/pulsatingscience.ui b/src/pulsatingscience.ui
index 792ff12d9d796147b26f8d9244ec69ff9b85f7c1..f54a5e7220c9cd2181abf0243a20270c6405c289 100644
--- a/src/pulsatingscience.ui
+++ b/src/pulsatingscience.ui
@@ -297,10 +297,13 @@
        <item row="4" column="1">
         <widget class="QSlider" name="sliderPulsarSpinAxisInclination">
          <property name="statusTip">
-          <string>Use this slider to adjust the inclination of the spin axis with respect to the orbit axis</string>
+          <string>Use this slider to adjust the ssource plan normal (iota)</string>
+         </property>
+         <property name="minimum">
+          <number>-180</number>
          </property>
          <property name="maximum">
-          <number>360</number>
+          <number>180</number>
          </property>
          <property name="value">
           <number>0</number>