diff --git a/cosmicmuffin/suma.py b/cosmicmuffin/suma.py
index 5e51324..cbf4ea9 100644
--- a/cosmicmuffin/suma.py
+++ b/cosmicmuffin/suma.py
@@ -1,3 +1,3 @@
 def suma(var1, var2):
 
-    return var1+var2
+    return var1-var2