diff --git a/src/display.c b/src/display.c
index 879f03d..eba9cca 100644
--- a/src/display.c
+++ b/src/display.c
@@ -27,6 +27,7 @@ static usize _display_get_fmt(dispflags_t flags, bool matched, usize _len, char
 	ADDSTR("\n");
 	TRACE("Output string written: %lu, (rlen %lu)", fw, len);
 	return fw;
+#undef ADDSTR
 }
 
 static void _display_normal(FILE* output, dispin_t*pIN input, dispflags_t flags)