diff --git a/python/analysis/auto_generated/raster/qgsrastercalculator.sip.in b/python/analysis/auto_generated/raster/qgsrastercalculator.sip.in
index f2d82bef5a2..845a253a07f 100644
--- a/python/analysis/auto_generated/raster/qgsrastercalculator.sip.in
+++ b/python/analysis/auto_generated/raster/qgsrastercalculator.sip.in
@@ -27,7 +27,7 @@ Represents an individual raster layer/band number entry within a raster calculat
 %Docstring
 Creates a list of raster entries from the current project.
 
-If there are more than one layers with the same data source
+If there is more than one layer with the same data source
 only one of them is added to the list, duplicate names are
 also handled by appending an _n integer to the base name.
 
diff --git a/src/analysis/raster/qgsrastercalculator.cpp b/src/analysis/raster/qgsrastercalculator.cpp
index 1f73d6fd438..6039f5e72ba 100644
--- a/src/analysis/raster/qgsrastercalculator.cpp
+++ b/src/analysis/raster/qgsrastercalculator.cpp
@@ -386,10 +386,9 @@ QVector<QgsRasterCalculatorEntry> QgsRasterCalculatorEntry::rasterEntries()
   QMap<QString, QgsMapLayer *>::const_iterator layerIt = layers.constBegin();
   for ( ; layerIt != layers.constEnd(); ++layerIt )
   {
-    QgsRasterLayer *rlayer = dynamic_cast<QgsRasterLayer *>( layerIt.value() );
+    QgsRasterLayer *rlayer = qobject_cast<QgsRasterLayer *>( layerIt.value() );
     if ( rlayer && rlayer->dataProvider() && rlayer->dataProvider()->name() == QLatin1String( "gdal" ) )
     {
-
       //get number of bands
       for ( int i = 0; i < rlayer->bandCount(); ++i )
       {
diff --git a/src/analysis/raster/qgsrastercalculator.h b/src/analysis/raster/qgsrastercalculator.h
index cc4136e6294..546365f0e9a 100644
--- a/src/analysis/raster/qgsrastercalculator.h
+++ b/src/analysis/raster/qgsrastercalculator.h
@@ -43,7 +43,7 @@ class ANALYSIS_EXPORT QgsRasterCalculatorEntry
     /**
      * Creates a list of raster entries from the current project.
      *
-     * If there are more than one layers with the same data source
+     * If there is more than one layer with the same data source
      * only one of them is added to the list, duplicate names are
      * also handled by appending an _n integer to the base name.
      *
diff --git a/src/app/qgsrastercalcdialog.h b/src/app/qgsrastercalcdialog.h
index 09111983c3e..02ca756c3df 100644
--- a/src/app/qgsrastercalcdialog.h
+++ b/src/app/qgsrastercalcdialog.h
@@ -55,7 +55,7 @@ class APP_EXPORT QgsRasterCalcDialog: public QDialog, private Ui::QgsRasterCalcD
      * \return a vector of raster entries from the current project
      * \deprecated since QGIS 3.6 use QgsRasterCalculatorEntry::rasterEntries() instead
      */
-    Q_DECL_DEPRECATED QVector<QgsRasterCalculatorEntry> rasterEntries() const;
+    Q_DECL_DEPRECATED QVector<QgsRasterCalculatorEntry> rasterEntries() const SIP_DEPRECATED;
 
   private slots:
     void mRasterBandsListWidget_itemDoubleClicked( QListWidgetItem *item );