diff --git a/src/pelagic_i330r.c b/src/pelagic_i330r.c
index 17aad3b..6bc5811 100644
--- a/src/pelagic_i330r.c
+++ b/src/pelagic_i330r.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301 USA
  */
+// test 01
 
 #include <string.h> // memcpy
 #include <stdlib.h> // malloc, free
diff --git a/src/pelagic_i330r.h b/src/pelagic_i330r.h
index 23045cd..b86cc23 100644
--- a/src/pelagic_i330r.h
+++ b/src/pelagic_i330r.h
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301 USA
  */
+ // test 01
 
 #ifndef PELAGIC_I330R_H
 #define PELAGIC_I330R_H