diff --git a/src/pulsatingscience.cpp b/src/pulsatingscience.cpp
index dc928479c1e3fe915a2490014f786a88d8664920..fa453d998061fac3867009f755444fb4e1cc4da1 100644
--- a/src/pulsatingscience.cpp
+++ b/src/pulsatingscience.cpp
@@ -143,10 +143,10 @@ void PulsatingScience::on_sliderVirgoAngle_valueChanged(int value)
     ui.lcdVirgoAngle->display(QString::number(value));
 }
 
-void PulsatingScience::on_sliderPulsarSpinAxisInclination_valueChanged(int value)
+void PulsatingScience::on_sliderSourceIota_valueChanged(int value)
 {
     ui.pulsarGlWidget->setSourceIota(value);
-    ui.lcdPulsarSpinAxisInclination->display(QString::number(value));
+    ui.lcdSourceIota->display(QString::number(value));
 }
 
 void PulsatingScience::on_sliderSourceInclination_valueChanged(int value)
@@ -346,7 +346,7 @@ void PulsatingScience::saveOrRestoreInitialAnimationSettings()
     static int sliderLHOAngle;
     static int sliderLLOAngle;
     static int sliderVirgoAngle;
-    static int sliderPulsarSpinAxisInclination;
+    static int sliderSourceIota;
     static int sliderSourceInclination;
 
     static double cameraAngleH;
@@ -357,7 +357,7 @@ void PulsatingScience::saveOrRestoreInitialAnimationSettings()
         // restore intial settings
         ui.sliderLHOAngle->setValue(sliderLHOAngle);
         ui.sliderLLOAngle->setValue(sliderLLOAngle);
-        ui.sliderPulsarSpinAxisInclination->setValue(sliderPulsarSpinAxisInclination);
+        ui.sliderSourceIota->setValue(sliderSourceIota);
         ui.sliderVirgoAngle->setValue(sliderVirgoAngle);
         ui.sliderSourceInclination->setValue(sliderSourceInclination);
         ui.pulsarGlWidget->resetCameraPosition(cameraAngleH, cameraAngleV, cameraZoom);
@@ -366,7 +366,7 @@ void PulsatingScience::saveOrRestoreInitialAnimationSettings()
         // save initial settings
         sliderLHOAngle = ui.sliderLHOAngle->value();
         sliderLLOAngle = ui.sliderLLOAngle->value();
-        sliderPulsarSpinAxisInclination = ui.sliderPulsarSpinAxisInclination->value();
+        sliderSourceIota = ui.sliderSourceIota->value();
         sliderVirgoAngle = ui.sliderVirgoAngle->value();
         sliderSourceInclination = ui.sliderSourceInclination->value();
         ui.pulsarGlWidget->getCameraPosition(cameraAngleH, cameraAngleV, cameraZoom);
diff --git a/src/pulsatingscience.h b/src/pulsatingscience.h
index 91d1aa2e5f09ef035244bc6d49b2f5977eb12198..800b46d71ed8a386ff293e670c96e37cbe198fff 100644
--- a/src/pulsatingscience.h
+++ b/src/pulsatingscience.h
@@ -44,7 +44,7 @@ public slots:
     void on_sliderLHOAngle_valueChanged(int value);
     void on_sliderLLOAngle_valueChanged(int value);
     void on_sliderVirgoAngle_valueChanged(int value);
-    void on_sliderPulsarSpinAxisInclination_valueChanged(int value);
+    void on_sliderSourceIota_valueChanged(int value);
     void on_sliderSourceInclination_valueChanged(int value);
 
     void fullscreenToggled();
diff --git a/src/pulsatingscience.ui b/src/pulsatingscience.ui
index 93d6827f2dbfc9a466722000903c9cb86bb90a70..86c402d3dba3cf4dc529b6439dae4287fad34824 100644
--- a/src/pulsatingscience.ui
+++ b/src/pulsatingscience.ui
@@ -295,9 +295,9 @@
         </widget>
        </item>
        <item row="4" column="1">
-        <widget class="QSlider" name="sliderPulsarSpinAxisInclination">
+        <widget class="QSlider" name="sliderSourceIota">
          <property name="statusTip">
-          <string>Use this slider to adjust the ssource plan normal (iota)</string>
+          <string>Use this slider to adjust the source plane normal (iota)</string>
          </property>
          <property name="minimum">
           <number>0</number>
@@ -317,7 +317,7 @@
         </widget>
        </item>
        <item row="4" column="2">
-        <widget class="QLCDNumber" name="lcdPulsarSpinAxisInclination">
+        <widget class="QLCDNumber" name="lcdSourceIota">
          <property name="numDigits">
           <number>6</number>
          </property>