diff --git a/pyVlsv/vlsvreader.py b/pyVlsv/vlsvreader.py
index 8b62f5d8..0ab6d159 100644
--- a/pyVlsv/vlsvreader.py
+++ b/pyVlsv/vlsvreader.py
@@ -760,7 +760,11 @@ def read_interpolated_variable(self, name, coordinates, operator="pass",periodic
 
          test_val=self.read_variable(name,lower_cell_id,operator)
          if isinstance(test_val, Iterable):
-            value_length=len(test_val)
+            try:
+               value_length=len(test_val)
+            except Exception as e:
+               # Can't determine size, maybe some division by zero?
+               value_length=1
          else:
             value_length=1