diff --git a/ssl/ssl.h b/ssl/ssl.h
index 82f4b0f84..5177a8a12 100644
--- a/ssl/ssl.h
+++ b/ssl/ssl.h
@@ -587,7 +587,7 @@ typedef int (*GEN_SESSION_CB)(const SSL *ssl, unsigned char *id,
 typedef struct ssl_comp_st
 	{
 	int id;
-	char *name;
+	const char *name;
 #ifndef OPENSSL_NO_COMP
 	COMP_METHOD *method;
 #else