diff --git a/tools/cumulfimgs.c b/tools/cumulfimgs.c
index b39d503..26239d6 100644
--- a/tools/cumulfimgs.c
+++ b/tools/cumulfimgs.c
@@ -41,6 +41,7 @@ void help(int v)
 puts("");
 puts("$ cumulfimgs a.fimg b.fimg c-fimg ...");
 puts("cumulator options :");
+puts("\t-a\tcompute average");
 puts("\t-g\tconvert to gray level");
 puts("\t-m\tcompute the max of the maxes");
 puts("\t-o\tname of output file");
@@ -140,11 +141,6 @@ if (rescale) {
 	fimg_div_cste(&accu, (float)compte);
 	}
 
-/*	XXX 		*/
-if (experiment) {
-
-	}
-/*	XXX 		*/
 
 fprintf(stderr, "max of max  %9.3f   %9.3f   %9.3f\n",
 				vals[0], vals[1], vals[2]);