diff --git a/gcpy/examples/plotting/plot_comparisons.py b/gcpy/examples/plotting/plot_comparisons.py
index a23c4151..1bd7bb16 100755
--- a/gcpy/examples/plotting/plot_comparisons.py
+++ b/gcpy/examples/plotting/plot_comparisons.py
@@ -15,7 +15,7 @@
 import argparse
 import xarray as xr
 from matplotlib import use as mpl_use
-#mpl_use("TkAgg")                          # X11 backend for plt.show()
+mpl_use("tkagg")                          # X11 backend for plt.show()
 import matplotlib.pyplot as plt
 from gcpy.constants import skip_these_vars
 from gcpy.plot.compare_single_level import compare_single_level
diff --git a/gcpy/examples/plotting/plot_single_panel.py b/gcpy/examples/plotting/plot_single_panel.py
index 965288e2..e9c3a8ba 100755
--- a/gcpy/examples/plotting/plot_single_panel.py
+++ b/gcpy/examples/plotting/plot_single_panel.py
@@ -16,7 +16,7 @@
 import argparse
 import xarray as xr
 from matplotlib import use as mpl_use
-#mpl_use("TkAgg")                        # X11 backend for plt.show()
+mpl_use("tkagg")                        # X11 backend for plt.show()
 import matplotlib.pyplot as plt
 from gcpy.plot.single_panel import single_panel
 from gcpy.util import rename_and_flip_gchp_rst_vars