diff --git a/plot_pres_4panel.py b/plot_pres_4panel.py
index a9ec120..eb8225f 100644
--- a/plot_pres_4panel.py
+++ b/plot_pres_4panel.py
@@ -5,8 +5,8 @@
 yt.enable_parallelism()
 import numpy as np
 import matplotlib.pyplot as plt
-from matplotlib.colors import LogNorm, SymLogNorm
-from matplotlib.ticker import FixedLocator, NullFormatter, NullLocator
+from matplotlib.colors import LogNorm
+from matplotlib.ticker import FixedLocator, MultipleLocator
 from mpl_toolkits.axes_grid1 import ImageGrid
 from mpl_toolkits.axes_grid1.anchored_artists import AnchoredSizeBar
 
@@ -50,6 +50,10 @@
     grid.axes_llc.tick_params(labelleft=False, labelbottom=False)
     for ax in grid:
         ax.tick_params(which='both', axis='both', direction='in')
+        ax.xaxis.set_major_locator(MultipleLocator(10))
+        ax.xaxis.set_minor_locator(MultipleLocator(5))
+        ax.yaxis.set_major_locator(MultipleLocator(10))
+        ax.yaxis.set_minor_locator(MultipleLocator(5))   
 
     d_norm = LogNorm(1e-32, 1e-24)
     t_norm = LogNorm(1e3, 1e8)