diff --git a/main.cpp b/main.cpp
index 98e9549..349603f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -29,8 +29,12 @@ int main(int /*argc*/, char** /*argv*/) {
 	memset(&jch_addr, 0, sizeof(jch_addr));
 	jch_addr.sin6_family = AF_INET6;
 	jch_addr.sin6_port = csts::DEFAULT_PORT;
-	if(inet_pton(AF_INET6, "::ffff::81.194.27.155", &jch_addr.sin6_addr)) {
-		perror("Cannot convert JCh address");
+	int rc = inet_pton(AF_INET6, "::FFFF:81.194.27.155", &jch_addr.sin6_addr);
+	if(rc != 1) {
+		if(rc == 0)
+			fprintf(stderr, "Address uses an invalid format.\n");
+		else
+			perror("Cannot convert JCh address");
 		exit(1);
 	}