diff --git a/src/ecoisundertaxon.c b/src/ecoisundertaxon.c
index 7a19a7b..21aac91 100644
--- a/src/ecoisundertaxon.c
+++ b/src/ecoisundertaxon.c
@@ -1,9 +1,5 @@
 #include "libecoPCR/ecoPCR.h"
-#include <string.h>
-#include <stdlib.h>
 #include <getopt.h>
-#include <stdio.h>
-
 
 int main(int argc, char **argv){
 	int32_t     	carg 		= 0;
@@ -29,9 +25,9 @@ int main(int argc, char **argv){
 	son = eco_findtaxonbytaxid(taxonomy, taxid_1);
 	
 	if (eco_isundertaxon(son, taxid_2))
-		printf("taxid_1 (%d) is son of taxid_2 (%d)\n",taxid_1, taxid_2);
+		printf("# taxid_1 (%d) is son of taxid_2 (%d)\n",taxid_1, taxid_2);
 	else
-		printf("taxid_1 (%d) is NOT son of taxid_2 (%d)\n",taxid_1, taxid_2);
+		printf("# taxid_1 (%d) is NOT son of taxid_2 (%d)\n",taxid_1, taxid_2);
 	
 	return 0;
 }
\ No newline at end of file