diff --git a/src/nano.c b/src/nano.c
index 07214b20..fa18d9f5 100644
--- a/src/nano.c
+++ b/src/nano.c
@@ -1092,6 +1092,7 @@ void do_toggle(int flag)
 			break;
 #ifdef ENABLE_COLOR
 		case NO_SYNTAX:
+			precalc_multicolorinfo();
 			refresh_needed = TRUE;
 			break;
 #endif