diff --git a/src/include/lib3270.h b/src/include/lib3270.h
index 4114cdc..39821e9 100644
--- a/src/include/lib3270.h
+++ b/src/include/lib3270.h
@@ -299,13 +299,31 @@
 	 */
 	typedef enum lib3270_ssl_state
 	{
-		LIB3270_SSL_UNSECURE,			/**< No secure connection */
-		LIB3270_SSL_SECURE,				/**< Connection secure with CA check */
-		LIB3270_SSL_NEGOTIATED,			/**< Connection secure, no CA or self-signed */
-		LIB3270_SSL_NEGOTIATING,		/**< Negotiating SSL */
-		LIB3270_SSL_UNDEFINED			/**< Undefined */
+		LIB3270_SSL_UNSECURE,			/**< @brief No secure connection */
+		LIB3270_SSL_SECURE,				/**< @brief Connection secure with CA check */
+		LIB3270_SSL_NEGOTIATED,			/**< @brief Connection secure, no CA or self-signed */
+		LIB3270_SSL_NEGOTIATING,		/**< @brief Negotiating SSL */
+		LIB3270_SSL_UNDEFINED			/**< @brief Undefined */
 	} LIB3270_SSL_STATE;
 
+
+	/**
+	 * @brief Field information.
+	 *
+	 */
+	typedef struct _lib3270_field  {
+
+		unsigned short	baddr;		/**< @brief Address of the field. */
+		unsigned short	length;		/**< @brief Field length */
+		unsigned char	attribute;	/**< @brief Field attribute */
+
+		struct {
+			unsigned char foreground;		/**< @brief foreground color (0x00 or 0xf) */
+			unsigned char bacground;		/**< @brief background color (0x00 or 0xf) */
+		} color;
+
+	} LIB3270_FIELD;
+
 	#define LIB3270_SSL_FAILED LIB3270_SSL_UNSECURE
 
 #ifdef __cplusplus
diff --git a/src/lib3270/ctlr.c b/src/lib3270/ctlr.c
index 7cd3bf2..db5fe10 100644
--- a/src/lib3270/ctlr.c
+++ b/src/lib3270/ctlr.c
@@ -487,10 +487,13 @@ LIB3270_EXPORT int lib3270_field_addr(H3270 *hSession, int baddr)
 {
 	int sbaddr;
 
-	CHECK_SESSION_HANDLE(hSession);
+	FAIL_IF_NOT_ONLINE(hSession);
 
-	if (!hSession->formatted)
+	if(!hSession->formatted)
+	{
+		errno = ENOTCONN;
 		return -1;
+	}
 
 	sbaddr = baddr;
 	do
diff --git a/win/mingw64-lib3270.spec b/win/mingw64-lib3270.spec
index a9e6fc6..28bf202 100644
--- a/win/mingw64-lib3270.spec
+++ b/win/mingw64-lib3270.spec
@@ -137,4 +137,3 @@ rm -rf %{buildroot}
 %{_mingw64_libdir}/*.a
 
 %changelog
-
--
libgit2 0.21.2