diff --git a/gdbsupport/gdb_unique_ptr.h b/gdbsupport/gdb_unique_ptr.h
index 8ff7cec1da9..2b6c0ce3d53 100644
--- a/gdbsupport/gdb_unique_ptr.h
+++ b/gdbsupport/gdb_unique_ptr.h
@@ -88,7 +88,7 @@ make_unique_xstrndup (const char *str, size_t n)
   return gdb::unique_xmalloc_ptr<char> (xstrndup (str, n));
 }
 
-/* An overload of operator+= fo adding gdb::unique_xmalloc_ptr<char> to a
+/* An overload of operator+= for adding gdb::unique_xmalloc_ptr<char> to a
    std::string.  */
 
 static inline std::string &