correct spelling mistakes
diff --git a/tools/solisten.py b/tools/solisten.py
index 44f3f9b..b322af9 100755
--- a/tools/solisten.py
+++ b/tools/solisten.py
@@ -6,7 +6,7 @@
# USAGE: solisten.py [-h] [-p PID] [--show-netns]
#
# This is provided as a basic example of TCP connection & socket tracing.
-# It could be usefull in scenarios where load balancers needs to be updated
+# It could be useful in scenarios where load balancers needs to be updated
# dynamically as application is fully initialized.
#
# All IPv4 listen attempts are traced, even if they ultimately fail or the