diff --git a/WiServer.cpp b/WiServer.cpp
index 2dce1f1..056eb3e 100644
--- a/WiServer.cpp
+++ b/WiServer.cpp
@@ -54,18 +54,18 @@ extern "C" {
 #define LF 10
 
 // Strings stored in program memory (defined in strings.c)
-extern const prog_char httpOK[];
-extern const prog_char httpNotFound[];
-extern const prog_char http10[];
-extern const prog_char post[];
-extern const prog_char get[];
-extern const prog_char authBasic[];
-extern const prog_char host[];
-extern const prog_char userAgent[];
-extern const prog_char contentTypeForm[];
-extern const prog_char contentLength[];
-extern const prog_char status[];
-extern const prog_char base64Chars[];
+extern const char /*prog_char*/ httpOK[];
+extern const char /*prog_char*/ httpNotFound[];
+extern const char /*prog_char*/ http10[];
+extern const char /*prog_char*/ post[];
+extern const char /*prog_char*/ get[];
+extern const char /*prog_char*/ authBasic[];
+extern const char /*prog_char*/ host[];
+extern const char /*prog_char*/ userAgent[];
+extern const char /*prog_char*/ contentTypeForm[];
+extern const char /*prog_char*/ contentLength[];
+extern const char /*prog_char*/ status[];
+extern const char /*prog_char*/ base64Chars[];
 
 
 /* GregEigsti - jrwifi submitted WiServer stability fix */
diff --git a/config.h b/config.h
index a3245d1..451a388 100644
--- a/config.h
+++ b/config.h
@@ -41,17 +41,17 @@
 extern U8 local_ip[];
 extern U8 gateway_ip[];
 extern U8 subnet_mask[];
-extern char ssid[];
+extern const char ssid[];
 extern U8 ssid_len;
-extern const prog_char security_passphrase[];
+extern const char /*prog_char*/ security_passphrase[];
 extern U8 security_passphrase_len;
 extern U8 security_type;
 extern U8 wireless_mode;
 
-extern prog_uchar wep_keys[];
+extern const unsigned char /*prog_uchar*/ wep_keys[];
 
-extern const prog_char webpage[];
-extern const prog_char twitter[];
+extern const char /*prog_char*/ webpage[];
+extern const char /*prog_char*/ twitter[];
 extern unsigned char mfg_id[4];
 
 #define WIRELESS_MODE_INFRA	1