diff --git a/ess/TraceWin.py b/ess/TraceWin.py
index 2460c50ff45aa352deb58e742a0e9283726becbb..445f8123def0b8f01859c7dbb6bf8acc476a02c5 100644
--- a/ess/TraceWin.py
+++ b/ess/TraceWin.py
@@ -718,7 +718,7 @@ class density_file:
         elif self.version == 10:
             numpy.fromfile(self.fin, dtype=numpy.int16, count=12408 // 2)
         elif self.version == 11:
-            numpy.fromfile(self.fin, dtype=numpy.int16, count=8816 // 2)
+            numpy.fromfile(self.fin, dtype=numpy.int16, count=12416 // 2)
         else:
             raise TypeError(f"It is not possible to read {self.filename}")