diff --git a/rosetest.c b/rosetest.c
index d1589d2..8723c53 100644
--- a/rosetest.c
+++ b/rosetest.c
@@ -3023,6 +3023,7 @@ int main(int argc, char *argv[])
 {
 	unsigned index;
 	unsigned offset;
+	const char *str;
 	static struct pri dummy_ctrl;
 
 	pri_set_message(rose_pri_message);
@@ -3136,7 +3137,12 @@ int main(int argc, char *argv[])
 	pri_message(&dummy_ctrl, "\n\n"
 		"List of operation codes:\n");
 	for (index = 0; index < ROSE_Num_Operation_Codes; ++index) {
-		pri_message(&dummy_ctrl, "%d: %s\n", index, rose_operation2str(index));
+		str = rose_operation2str(index);
+		if (!strncmp(str, "Invalid code:", 13)) {
+			pri_error(&dummy_ctrl, "%d: %s\n", index, str);
+		} else {
+			pri_message(&dummy_ctrl, "%d: %s\n", index, str);
+		}
 	}
 	pri_message(&dummy_ctrl, "\n\n"
 		"************************************************************\n");
@@ -3146,7 +3152,12 @@ int main(int argc, char *argv[])
 	pri_message(&dummy_ctrl, "\n\n"
 		"List of error codes:\n");
 	for (index = 0; index < ROSE_ERROR_Num_Codes; ++index) {
-		pri_message(&dummy_ctrl, "%d: %s\n", index, rose_error2str(index));
+		str = rose_error2str(index);
+		if (!strncmp(str, "Invalid code:", 13)) {
+			pri_error(&dummy_ctrl, "%d: %s\n", index, str);
+		} else {
+			pri_message(&dummy_ctrl, "%d: %s\n", index, str);
+		}
 	}
 	pri_message(&dummy_ctrl, "\n\n"
 		"************************************************************\n");