diff --git a/tools/fimgfx.c b/tools/fimgfx.c
index 853bc360..1ed80911 100644
--- a/tools/fimgfx.c
+++ b/tools/fimgfx.c
@@ -29,7 +29,7 @@ enum fxid { Fx_cos01=5, Fx_cos010, Fx_pow2, Fx_sqrt, Fx_gray0, Fx_halfsz0,
 		Fx_classtrial, Fx_mirror, Fx_shift0, Fx_trimul,
 		Fx_xper, Fx_binarize, Fx_trinarize, Fx_hilight_R,
 		Fx_absolute, Fx_clamp, Fx_fakol0, Fx_fakol3,
-		Fx_morph0, Fx_morph4, Fx_morph8 };
+		Fx_morph0, Fx_morph4, Fx_morph8, Fx_thermocol };
 
 Fx fx_list[] = {
 	{ "cos01",		Fx_cos01,	0,	1 },
@@ -57,6 +57,7 @@ Fx fx_list[] = {
 	{ "morph0",		Fx_morph0,	0,	1 },
 	{ "morph4",		Fx_morph4,	0,	1 },
 	{ "morph8",		Fx_morph8,	0,	1 },
+	{ "thermocol",		Fx_thermocol,	0,	1 },
 	{ NULL,			0,		0,	0 }
 	};
 
@@ -272,6 +273,9 @@ switch (action) {
 	case Fx_morph8:
 		foo = fimg_filtre_morpho_0(&src, &dest, 8);	break;
 
+	case Fx_thermocol:
+		foo = fimg_auto_thermique(&src, &dest, 0);	break;
+
 	default:
 		fprintf(stderr, "%s %s : %d is bad action\n",
 					__FILE__, __func__, action);