diff --git a/easysock.cpp b/easysock.cpp
index b872fb0..ace9f79 100644
--- a/easysock.cpp
+++ b/easysock.cpp
@@ -128,7 +128,7 @@ int create_remote (int network,char transport,char* address,int port,struct sock
 }
 
 
-int check_ip_ver(char* address) {
+int check_ip_ver(const char* address) {
 	char buffer[16]; /* 16 chars - 128 bits - is enough to hold an ipv6 address */
 	if (inet_pton(AF_INET,address,buffer) == 1) {
 		return 4;