diff --git a/src/Mod/Fem/FemTools.py b/src/Mod/Fem/FemTools.py
index 97783806d..0a03e934a 100644
--- a/src/Mod/Fem/FemTools.py
+++ b/src/Mod/Fem/FemTools.py
@@ -223,10 +223,10 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
         if ret_code or self.ccx_stderr:
             print "Analysis failed with exit code {}".format(ret_code)
             print "--------start of stderr-------"
-            print self.stderr
+            print self.ccx_stderr
             print "--------end of stderr---------"
             print "--------start of stdout-------"
-            print self.stdout
+            print self.ccx_stdout
             print "--------end of stdout---------"
 
     ## returns minimum, average and maximum value for provided result type