diff --git a/README.md b/README.md
index 2d70bde..425162b 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,9 @@ inaccuracies or bugs (please report!)
 - Simulating account balance with day granularity
 - Plotting results using PyPlot
 
+![betty1](betty_graph.png)
+![betty2](betty_txt.png)
+
 ## Dependencies
 
 The script uses NumPy, MatPlotLib and Pandas for plotting. This may be improved in a future version
diff --git a/betty_graph.png b/betty_graph.png
new file mode 100644
index 0000000..ae9c762
Binary files /dev/null and b/betty_graph.png differ
diff --git a/betty_txt.png b/betty_txt.png
new file mode 100644
index 0000000..19f1a9e
Binary files /dev/null and b/betty_txt.png differ
diff --git a/profin/__init__.py b/profin/__init__.py
index 74c9a1e..e448dd9 100644
--- a/profin/__init__.py
+++ b/profin/__init__.py
@@ -257,7 +257,7 @@ class MonthlyIncome(AIncome):
                             self.ended = True
                             topay = self.remains
                             self.remains = 0
-                            return topay
+                            return topay if self.monthly > 0 else -topay
                         self.remains -= abs(self.monthly)
                     else:
                         return 0