diff --git a/include/proto/sample.h b/include/proto/sample.h
index 4fb5bab..606dcb6 100644
--- a/include/proto/sample.h
+++ b/include/proto/sample.h
@@ -51,7 +51,7 @@
 
 /*
  * This function just apply a cast on sample. It returns 0 if the cast is not
- * avalaible or if the cast fails, otherwise returns 1. It does not modify the
+ * available or if the cast fails, otherwise returns 1. It does not modify the
  * input sample on failure.
  */
 static inline