diff --git a/MitsubishiSEZKDXXHeatpumpIR.h b/MitsubishiSEZKDXXHeatpumpIR.h
index e91c15d..5faa52a 100644
--- a/MitsubishiSEZKDXXHeatpumpIR.h
+++ b/MitsubishiSEZKDXXHeatpumpIR.h
@@ -3,7 +3,7 @@
 */
 
 #ifndef MitsubishiSEZKDXXHeatpumpIR_h
-#define MitsubishiSEZKDXXaHeatpumpIR_h
+#define MitsubishiSEZKDXXHeatpumpIR_h
 
 #include <HeatpumpIR.h>