diff --git a/src/tuxedo_io/tuxedo_io.c b/src/tuxedo_io/tuxedo_io.c
index c8f087c..71edfcf 100644
--- a/src/tuxedo_io/tuxedo_io.c
+++ b/src/tuxedo_io/tuxedo_io.c
@@ -358,7 +358,7 @@ static long uniwill_ioctl_interface(struct file *file, unsigned int cmd, unsigne
 			result = byte_data;
 			copy_result = copy_to_user((void *) arg, &result, sizeof(result));
 			break;
-		case R_UW_FANS_OFF_POSSIBLE:
+		case R_UW_FANS_OFF_AVAILABLE:
 			result = has_universal_ec_fan_control();
 			if (result == 1) {
 				result = 0;
@@ -368,7 +368,7 @@ static long uniwill_ioctl_interface(struct file *file, unsigned int cmd, unsigne
 			}
 			copy_result = copy_to_user((void *) arg, &result, sizeof(result));
 			break;
-		case R_UW_FANSPEED_MIN:
+		case R_UW_FANS_MIN_SPEED:
 			result = has_universal_ec_fan_control();
 			if (result == 1) {
 				result = 20;
diff --git a/src/tuxedo_io/tuxedo_io_ioctl.h b/src/tuxedo_io/tuxedo_io_ioctl.h
index a829753..d506232 100644
--- a/src/tuxedo_io/tuxedo_io_ioctl.h
+++ b/src/tuxedo_io/tuxedo_io_ioctl.h
@@ -79,8 +79,8 @@
 
 #define R_UW_MODE		_IOR(MAGIC_READ_UW, 0x14, int32_t*)
 #define R_UW_MODE_ENABLE	_IOR(MAGIC_READ_UW, 0x15, int32_t*)
-#define R_UW_FANS_OFF_POSSIBLE	_IOR(MAGIC_READ_UW, 0x16, int32_t*)
-#define R_UW_FANSPEED_MIN	_IOR(MAGIC_READ_UW, 0x17, int32_t*)
+#define R_UW_FANS_OFF_AVAILABLE	_IOR(MAGIC_READ_UW, 0x16, int32_t*)
+#define R_UW_FANS_MIN_SPEED	_IOR(MAGIC_READ_UW, 0x17, int32_t*)
 
 // Write
 #define W_UW_FANSPEED		_IOW(MAGIC_WRITE_UW, 0x10, int32_t*)