diff --git a/python/plugins/processing/algs/qgis/RasterCalculator.py b/python/plugins/processing/algs/qgis/RasterCalculator.py
index 3d826ab1929..f8993582d01 100644
--- a/python/plugins/processing/algs/qgis/RasterCalculator.py
+++ b/python/plugins/processing/algs/qgis/RasterCalculator.py
@@ -101,7 +101,7 @@ class RasterCalculator(GeoAlgorithm):
                 layersDict[name] = lyr
 
         entries = []
-        for name, lyr in layersDict.iteritems():
+        for name, lyr in layersDict.items():
             for n in xrange(lyr.bandCount()):
                 entry = QgsRasterCalculatorEntry()
                 entry.ref = '%s@%i' % (name, n + 1)