diff --git a/src/mod/applications/mod_video_filter/mod_video_filter.c b/src/mod/applications/mod_video_filter/mod_video_filter.c
index 5c8b08c82f..5a11988ace 100644
--- a/src/mod/applications/mod_video_filter/mod_video_filter.c
+++ b/src/mod/applications/mod_video_filter/mod_video_filter.c
@@ -108,7 +108,7 @@ static void parse_params(chromakey_context_t *context, int start, int argc, char
 			
 			switch_color_set_rgb(&context->mask[j], list[j]);
 			if (thresh) {
-				context->thresholds[j] = thresh;
+				context->thresholds[j] = thresh*thresh;
 			}
 			context->mask_len++;
 		}
@@ -121,7 +121,7 @@ static void parse_params(chromakey_context_t *context, int start, int argc, char
 		int j;
 
 		if (thresh > 0) {
-			context->threshold = thresh;
+			context->threshold = thresh * thresh;
 
 			for (j = 0; j < context->mask_len; j++) {
 				if (!context->thresholds[j]) context->thresholds[j] = context->threshold;
diff --git a/src/switch_core_video.c b/src/switch_core_video.c
index 401e97997a..052ad98f67 100644
--- a/src/switch_core_video.c
+++ b/src/switch_core_video.c
@@ -768,13 +768,13 @@ static inline int switch_color_distance(switch_rgb_color_t *c1, switch_rgb_color
 	cg2 = c1->g/2 - c2->g/2;
 	cb2 = c1->b/2 - c2->b/2;
 
-	a = sqrt((2*cr*cr) + (4*cg*cg) + (3*cb*cb));
-	b = sqrt((2*cr2*cr2) + (4*cg2*cg2) + (3*cb2*cb2));
+	a = ((2*cr*cr) + (4*cg*cg) + (3*cb*cb));
+	b = ((2*cr2*cr2) + (4*cg2*cg2) + (3*cb2*cb2));
 
 	aa = (int)a;
-	bb = (int)b*5;
+	bb = (int)b*25;
 
-	r = (((bb*2)+(aa))/3)/10;
+	r = (((bb*4)+(aa))/9)/100;
 
 	return r;