diff --git a/test/prsim_plot.py b/test/prsim_plot.py
index 525dde8..bc412c9 100755
--- a/test/prsim_plot.py
+++ b/test/prsim_plot.py
@@ -108,7 +108,7 @@ Use -exclude='regex' to specify signals to exclude (or -ex).""")
 	colour_high = (252, 186, 3)
 	colour_low = (20, 184, 186)
 
-	fig = plt.figure(figsize = (num_sigs/3,num_times/3))
+	fig = plt.figure(figsize = (num_sigs/3+4,num_times/3+4), dpi = 100)
 
 	image = np.zeros((num_sigs, num_times, 3), dtype = int)
 	image[signals_matrix == 0] = colour_undefined