diff --git a/.gitignore b/.gitignore
index 74de672..2ea0f84 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,5 +8,5 @@ dummy-file
 
 tools/*.obj
 tools/read_obj
-tools/xyz
+tools/*.xyz
 
diff --git a/Makefile b/Makefile
index e270699..8ad3a05 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@
 
 CC = gcc
 
-OPT = -Wall -g -DDEBUG_LEVEL=0 -DMUST_ABORT=0
+OPT = -Wall -g -O3 -DDEBUG_LEVEL=0 -DMUST_ABORT=0
 
 libbubulles.a:	bubulles.o importobj.o
 	ar r $@ $?
diff --git a/bubulles.c b/bubulles.c
index 0a6885d..586a3b8 100644
--- a/bubulles.c
+++ b/bubulles.c
@@ -75,6 +75,9 @@ return bblptr;
 /* --------------------------------------------------------------------- */
 int free_bubulles(BBList *bbl, int k)
 {
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p %d )\n", __func__, bbl, k);
+#endif
 
 if (NULL == bbl->bbs) {
 	fprintf(stderr, "%s : array ptr is null\n", __func__);
@@ -147,7 +150,6 @@ if (where->fidx >= where->size) {
 #endif
 	return -1;
 	}
-	
 
 memcpy(&where->bbs[where->fidx], what, sizeof(Bubulle));
 
diff --git a/bubulles.h b/bubulles.h
index 7a1ba48..2c95cde 100644
--- a/bubulles.h
+++ b/bubulles.h
@@ -4,7 +4,7 @@
 
 /* --------------------------------------------------------------------- */
 
-#define LIBBB_VERSION		56
+#define LIBBB_VERSION		57
 
 #define SZ_BUBULLE_TEXT		51		/* arbitrary value */
 
diff --git a/importobj.c b/importobj.c
index 8912b7b..159d9df 100644
--- a/importobj.c
+++ b/importobj.c
@@ -69,7 +69,7 @@ if (3 == foo) {
 return foo;
 }
 /* --------------------------------------------------------------------- */
-int try_to_read_an_OBJ_file(char *fname, int notused)
+int try_to_read_an_OBJ_file(char *infname, char *outfname, int notused)
 {
 FILE		*fpin;
 char		line[LINE_SZ+1], *cptr;
@@ -82,12 +82,12 @@ Bubulle         bubulle;
 fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, fname, notused);
 #endif
 
-if (NULL==(fpin=fopen(fname, "r"))) {
-	perror(fname);
+if (NULL==(fpin=fopen(infname, "r"))) {
+	perror(infname);
 	exit(1);
 	}
 
-bublist = alloc_bubulles(fname, 1000, 0);
+bublist = alloc_bubulles(infname, 1000, 0);
 if (NULL==bublist) {
         fprintf(stderr, "err in %s, aborting...\n", __func__);
         abort();
@@ -110,7 +110,7 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 		continue;
 		}
 	tokenid = type_of_the_line(cptr);
-	fprintf(stderr, "tok '%s' --> %d\n", cptr, tokenid);
+	if (verbosity) fprintf(stderr, "token '%s' --> %d\n", cptr, tokenid);
 
 	memset(&bubulle, 0, sizeof(Bubulle));
 
@@ -119,6 +119,7 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 			/* do nothing */
 			break;
 		case T_vertice:
+			x = y = z = 0.0;
 			foo = parse_vertice(cptr, &x, &y, &z);
 			bubulle.p.x = x;
 			bubulle.p.y = y;
@@ -126,7 +127,7 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 			if (verbosity > 1) niceprint_bubulle(&bubulle, 0);
 			break;
 		default:
-
+			// fprintf(stderr, "token %d ?\n", tokenid);
 			continue;		/* wtf ? */
 		}
 
@@ -143,7 +144,7 @@ if(verbosity) {
 	fprintf(stderr, "%s : %d vertices loaded\n", __func__, nbre);
 	}
 
-bubulles_to_data("xyz", NULL, bublist, 0);
+bubulles_to_data(outfname, NULL, bublist, 0);
 
 return 0;
 }
diff --git a/tools/read_obj.c b/tools/read_obj.c
index cd645af..d78bbc9 100644
--- a/tools/read_obj.c
+++ b/tools/read_obj.c
@@ -6,7 +6,7 @@
 #include	<stdlib.h>
 #include	"../bubulles.h"
 
-int try_to_read_an_OBJ_file(char *fname, int notused);
+int try_to_read_an_OBJ_file(char *fname, char *outfname, int notused);
 int	verbosity;
 
 int main(int argc, char *argv[])
@@ -20,7 +20,7 @@ if (2 != argc) {
 
 verbosity = 2;
 
-foo = try_to_read_an_OBJ_file(argv[1], 0);
+foo = try_to_read_an_OBJ_file(argv[1], "bulles.xyz", 0);
 fprintf(stderr, "try to read -> %d\n", foo);
 
 return 0;