diff --git a/idDHT11.h b/idDHT11.h
index 384cc44..ea39613 100644
--- a/idDHT11.h
+++ b/idDHT11.h
@@ -21,17 +21,19 @@
 #define IDDHT11LIB_VERSION "0.1"
 
 // state codes
-#define IDDHTLIB_OK				0
+#define IDDHTLIB_OK			0
 #define IDDHTLIB_ACQUIRING		1
 #define IDDHTLIB_ACQUIRED		2
-#define IDDHTLIB_RESPONSE_OK	3
+#define IDDHTLIB_RESPONSE_OK		3
 
 // error codes
 #define IDDHTLIB_ERROR_CHECKSUM		-1
-#define IDDHTLIB_ERROR_TIMEOUT		-2
-#define IDDHTLIB_ERROR_ACQUIRING	-3
-#define IDDHTLIB_ERROR_DELTA		-4
-#define IDDHTLIB_ERROR_NOTSTARTED	-5
+#define IDDHTLIB_ERROR_ISR_TIMEOUT	-2
+#define IDDHTLIB_ERROR_RESPONSE_TIMEOUT	-3
+#define IDDHTLIB_ERROR_DATA_TIMEOUT	-4
+#define IDDHTLIB_ERROR_ACQUIRING	-5
+#define IDDHTLIB_ERROR_DELTA		-6
+#define IDDHTLIB_ERROR_NOTSTARTED	-7
 
 #define IDDHT11_CHECK_STATE		if(state == STOPPED)													\
 									return status;													\
@@ -71,4 +73,4 @@ private:
 	volatile float hum;
 	volatile float temp;
 };
-#endif // idDHT11_H__
\ No newline at end of file
+#endif // idDHT11_H__