diff --git a/tests/old_dtopotools.py b/tests/old_dtopotools.py
index e61854c72..71921c11c 100644
--- a/tests/old_dtopotools.py
+++ b/tests/old_dtopotools.py
@@ -726,7 +726,7 @@ def plot_subfaults(subfaults, plot_centerline=False, slip_color=False, \
         if cmin_slip is None:
             cmin_slip = 0.
         if test_random:
-			print("*** test_random == True so slip and rake have been randomized")
+            print("*** test_random == True so slip and rake have been randomized")
         
     y_ave = 0.
     for subfault in subfaults:
@@ -1419,4 +1419,4 @@ def set_geometry(subfault):
         cmd = "geometry['%s'] = %s" % (param,eval(param))
         exec(cmd)
 
-    return geometry
\ No newline at end of file
+    return geometry