diff --git a/python/plugins/processing/algs/qgis/SplitLinesWithLines.py b/python/plugins/processing/algs/qgis/SplitLinesWithLines.py
index 0cb75add2d4..7cf4ffb6028 100644
--- a/python/plugins/processing/algs/qgis/SplitLinesWithLines.py
+++ b/python/plugins/processing/algs/qgis/SplitLinesWithLines.py
@@ -129,7 +129,9 @@ class SplitLinesWithLines(GeoAlgorithm):
                         inLines = outLines
 
             for aLine in inLines:
-                if len(aLine.asPolyline()) > 2 or aLine.asPolyline()[0] != aLine.asPolyline()[1]:
+                if len(aLine.asPolyline()) > 2 or \
+                        (len(aLine.asPolyline()) == 2 and \
+                        aLine.asPolyline()[0] != aLine.asPolyline()[1]):
                     # sometimes splitting results in lines of zero length
                     outFeat.setGeometry(aLine)
                     writer.addFeature(outFeat)