diff --git a/Exec/science/massive_star/analysis/massive_star_multi.py b/Exec/science/massive_star/analysis/massive_star_multi.py
index 6aff43e99f..29f6bf3829 100755
--- a/Exec/science/massive_star/analysis/massive_star_multi.py
+++ b/Exec/science/massive_star/analysis/massive_star_multi.py
@@ -5,13 +5,11 @@
 
 import matplotlib
 import matplotlib.pyplot as plt
-import numpy as np
-from mpl_toolkits.axes_grid1 import ImageGrid
 
 import yt
 from yt.frontends.boxlib.api import CastroDataset
 # assume that our data is in CGS
-from yt.units import amu, cm
+from yt.units import cm
 
 matplotlib.use('agg')