diff --git a/src/Arduino_AdvancedAnalog.h b/src/Arduino_AdvancedAnalog.h
index a4fadbd..6aec2b3 100644
--- a/src/Arduino_AdvancedAnalog.h
+++ b/src/Arduino_AdvancedAnalog.h
@@ -25,7 +25,7 @@
  **************************************************************************************/
 
 #ifdef ARDUINO_PORTENTA_H7_M4
-# error "This library on works on the M7 core of any STM32H747 based board (Portenta H7, Giga, X8)."
+# error "This library only works on the M7 core of any STM32H747 based board (Portenta H7, Giga)."
 #endif
 
 #include "AdvancedADC.h"