diff --git a/las_outputs.py b/las_outputs.py
index defa76c..f4d58d3 100644
--- a/las_outputs.py
+++ b/las_outputs.py
@@ -112,7 +112,7 @@ def plot_profiles(profile_name, csv_output_dir, graph_loc, ch_limits, delta_vol,
 
     # Show most recent volume change
     if delta_vol is not None:
-        ax.annotate('Most recent\nvolume change:\n{:0.1f} m$^3$/m'.format(delta_vol),
+        ax.annotate('Most recent\nvolume change:\n{:+0.1f} m$^3$/m'.format(delta_vol),
                     (0.05, 0.15), xycoords='axes fraction', fontsize=9,
                     backgroundcolor='#ffffff', linespacing=1.5)