diff --git a/src/gui/qgsextentgroupbox.cpp b/src/gui/qgsextentgroupbox.cpp
index d5d77db6a04a..1a39ccc34d68 100644
--- a/src/gui/qgsextentgroupbox.cpp
+++ b/src/gui/qgsextentgroupbox.cpp
@@ -78,6 +78,7 @@ void QgsExtentGroupBox::setOutputCrs( const QgsCoordinateReferenceSystem &output
 {
   if ( mOutputCrs != outputCrs )
   {
+    bool prevExtentEnabled = isChecked();
     switch ( mExtentState )
     {
       case CurrentExtent:
@@ -116,6 +117,8 @@ void QgsExtentGroupBox::setOutputCrs( const QgsCoordinateReferenceSystem &output
         break;
     }
 
+    if ( !prevExtentEnabled )
+      setChecked( false );
   }
 
 }
diff --git a/tests/src/python/test_qgsextentgroupbox.py b/tests/src/python/test_qgsextentgroupbox.py
index c786093a7dbc..49627e62e60a 100644
--- a/tests/src/python/test_qgsextentgroupbox.py
+++ b/tests/src/python/test_qgsextentgroupbox.py
@@ -86,6 +86,15 @@ def test_SettingExtent(self):
 
     def testSetOutputCrs(self):
         w = qgis.gui.QgsExtentGroupBox()
+        w.setCheckable(True)
+
+        # ensure setting output crs doesn't change state of group box
+        w.setChecked(False)
+        w.setOutputCrs(QgsCoordinateReferenceSystem('epsg:4326'))
+        self.assertFalse(w.isChecked())
+        w.setChecked(True)
+        w.setOutputCrs(QgsCoordinateReferenceSystem('epsg:4326'))
+        self.assertTrue(w.isChecked())
 
         w.setOutputCrs(QgsCoordinateReferenceSystem('epsg:4326'))
         w.setCurrentExtent(QgsRectangle(1, 2, 3, 4), QgsCoordinateReferenceSystem('epsg:4326'))