diff --git a/project_euler/problem_09/sol3.py b/project_euler/problem_09/sol3.py
index 829ba84c4a77..006029c8a30d 100644
--- a/project_euler/problem_09/sol3.py
+++ b/project_euler/problem_09/sol3.py
@@ -21,8 +21,9 @@ def solution():
      1. a**2 + b**2 = c**2
      2. a + b + c = 1000
 
-    #>>> solution()
-    #31875000
+    # The code below has been commented due to slow execution affecting Travis.
+    # >>> solution()
+    # 31875000
     """
     return [
         a * b * c