diff --git a/floatimg.h b/floatimg.h
index 53ef1c56..35add61c 100644
--- a/floatimg.h
+++ b/floatimg.h
@@ -3,7 +3,7 @@
  *			ugly code from tTh
  */
 
-#define		FIMG_VERSION	107
+#define		FIMG_VERSION	108
 
 /*
  *	in memory descriptor
diff --git a/tools/fimgfx.c b/tools/fimgfx.c
index 48ace935..66027d3c 100644
--- a/tools/fimgfx.c
+++ b/tools/fimgfx.c
@@ -59,6 +59,9 @@ for (n=0, fx=fx_list; fx->name; fx++, n++) {
 return -1;		/* NOT FOUND */
 }
 /* --------------------------------------------------------------------- */
+/*
+ *		this is the mutant function
+ */
 int do_experiment(FloatImg *S, FloatImg *D, float kf)
 {
 int		foo;
@@ -74,10 +77,10 @@ if (foo) {
 	return -98;
 	}
 
-foo = fimg_killcolors_a(D, kf);
+foo = fimg_classif_trial(S, D, 0);
 if (foo) {
-	fprintf(stderr, "%s err %d killcolors %p %f\n", __func__,
-				foo, 		S, kf);
+	fprintf(stderr, "%s err %d classif_trial %p\n", __func__,
+				foo, 		S);
 	return -98;
 	}