diff --git a/petram/mfem_viewer.py b/petram/mfem_viewer.py
index ed31798..f64165d 100644
--- a/petram/mfem_viewer.py
+++ b/petram/mfem_viewer.py
@@ -18,6 +18,7 @@
 import ifigure.events
 from petram.pi.dlg_progressbar import progressbar
 
+import petram
 try:
     import petram.geom
     hasGeom = True
diff --git a/setup.py b/setup.py
index 8d1bb3c..d2691bd 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 setup(
     name='PetraM_Base',
 
-    version='2.1.27',
+    version='2.1.28',
 
     description='PetraM base package',
     long_description=long_description,