diff --git a/mod_auth_gss.c.in b/mod_auth_gss.c.in
index 6228b4d..3569ebb 100644
--- a/mod_auth_gss.c.in
+++ b/mod_auth_gss.c.in
@@ -38,6 +38,10 @@
  */
 
 #include "mod_gss.h"
+
+#define DECLINED PR_DECLINED
+#define ERROR_INT PR_ERROR_INT
+
 extern unsigned char gss_engine;
 extern unsigned long gss_flags;
 extern int gss_logfd;
diff --git a/mod_gss.c.in b/mod_gss.c.in
index 9d2d4c8..83a4019 100644
--- a/mod_gss.c.in
+++ b/mod_gss.c.in
@@ -57,6 +57,13 @@
 
 #include "mod_gss.h"
 
+#define LOG_SYMLINK PR_LOG_SYMLINK
+#define LOG_WRITEABLE_DIR PR_LOG_WRITABLE_DIR
+#define HANDLED PR_HANDLED
+#define ERROR PR_ERROR
+#define DECLINED PR_DECLINED
+#define ERROR_INT PR_ERROR_INT
+
 module gss_module;
 
 /* Module variables maybe used externaly */
@@ -1395,7 +1402,7 @@ MODRET gss_auth(cmd_rec *cmd) {
     
     /* Convert the parameter to upper case */
     for (i = 0; i < strlen(cmd->argv[1]); i++)
-	(cmd->argv[1])[i] = toupper((cmd->argv[1])[i]);
+	((char*)cmd->argv[1])[i] = toupper(((char*)cmd->argv[1])[i]);
 
     if (!strcmp(cmd->argv[1], "GSSAPI")) { 
 	pr_response_send(R_334, "Using authentication type %s; ADAT must follow", cmd->argv[1]);
@@ -2014,7 +2021,7 @@ MODRET gss_prot(cmd_rec *cmd) {
 
     /* Convert the parameter to upper case */
     for (i = 0; i < strlen(cmd->argv[1]); i++)
-	(cmd->argv[1])[i] = toupper((cmd->argv[1])[i]);
+	((char*)cmd->argv[1])[i] = toupper(((char*)cmd->argv[1])[i]);
 
     /* Only PROT S , PROT C or PROT P is valid with respect to GSS. */
     if (!strcmp(cmd->argv[1], "C")) {
@@ -2098,7 +2105,7 @@ MODRET set_gsskeytab(cmd_rec *cmd) {
     if (!file_exists(cmd->argv[1]))
 	CONF_ERROR(cmd, "file does not exist");
 
-    if (*cmd->argv[1] != '/')
+    if (((char*)(*cmd->argv))[1] != '/')
 	CONF_ERROR(cmd, "parameter must be an absolute path");
 
     add_config_param_str(cmd->argv[0], 1, cmd->argv[1]);