1 files changed, 3 insertions, 0 deletions
diff --git a/operetta.c b/operetta.c
index 4192ffb..f399093 100644
--- a/operetta.c
+++ b/operetta.c
@@ -20,6 +20,9 @@ int main(int argc, char** argv) {
 	free(content);
 }
 void write_prop(prop_t prop) {
+	if (prop.isNegative) {
+		printf("%s", "!");
+	}
 	if (prop.isSimple) {
 		printf("%s", prop.name);
 	}