--- /dev/null
+--- a/src/nano.c
++++ b/src/nano.c
+@@ -1395,11 +1395,14 @@ bool changes_something(const void *f)
+ #ifndef NANO_TINY
+ f == chop_previous_word || f == chop_next_word ||
+ f == zap_text || f == cut_till_eof || f == do_execute ||
+- f == do_indent || f == do_unindent || f == do_comment ||
++ f == do_indent || f == do_unindent ||
+ #endif
+ #ifdef ENABLE_JUSTIFY
+ f == do_justify || f == do_full_justify ||
+ #endif
++#ifdef ENABLE_COMMENT
++ f == do_comment ||
++#endif
+ #ifdef ENABLE_SPELLER
+ f == do_spell ||
+ #endif