diff --git a/arch/avr32/mach-at32ap/pio.h b/arch/avr32/mach-at32ap/pio.h
index 7795116a483af37707a66ae57c1f1da49e59a41a..9484dfcc08f224e925a8408c1b5d9edd30ccb6f6 100644
--- a/arch/avr32/mach-at32ap/pio.h
+++ b/arch/avr32/mach-at32ap/pio.h
@@ -57,7 +57,7 @@
 
 /* Bitfields in IFDR */
 
-/* Bitfields in ISFR */
+/* Bitfields in IFSR */
 
 /* Bitfields in SODR */