diff --git a/kernel/supercalls.h b/kernel/supercalls.h
index ca3f0720..c4f95e19 100644
--- a/kernel/supercalls.h
+++ b/kernel/supercalls.h
@@ -151,7 +151,7 @@ struct ksu_manual_su_cmd {
 #define KSU_IOCTL_SET_FEATURE _IOC(_IOC_WRITE, 'K', 14, 0)
 #define KSU_IOCTL_GET_WRAPPER_FD _IOC(_IOC_WRITE, 'K', 15, 0)
 #define KSU_IOCTL_MANAGE_MARK _IOC(_IOC_READ|_IOC_WRITE, 'K', 16, 0)
-#define KSU_IOCTL_NUKE_EXT4_SYSFS _IOC(_IOC_READ|_IOC_WRITE, 'K', 17, 0)
+#define KSU_IOCTL_NUKE_EXT4_SYSFS _IOC(_IOC_WRITE, 'K', 17, 0)
 // Other IOCTL command definitions
 #define KSU_IOCTL_GET_FULL_VERSION _IOC(_IOC_READ, 'K', 100, 0)
 #define KSU_IOCTL_HOOK_TYPE _IOC(_IOC_READ, 'K', 101, 0)
diff --git a/userspace/ksud/src/ksucalls.rs b/userspace/ksud/src/ksucalls.rs
index 446f3ed8..6016a368 100644
--- a/userspace/ksud/src/ksucalls.rs
+++ b/userspace/ksud/src/ksucalls.rs
@@ -17,7 +17,7 @@ const KSU_IOCTL_GET_FEATURE: u32 = 0xc0004b0d; // _IOC(_IOC_READ|_IOC_WRITE, 'K'
 const KSU_IOCTL_SET_FEATURE: u32 = 0x40004b0e; // _IOC(_IOC_WRITE, 'K', 14, 0)
 const KSU_IOCTL_GET_WRAPPER_FD: u32 = 0x40004b0f; // _IOC(_IOC_WRITE, 'K', 15, 0)
 const KSU_IOCTL_MANAGE_MARK: u32 = 0xc0004b10; // _IOC(_IOC_READ|_IOC_WRITE, 'K', 16, 0)
-const KSU_IOCTL_NUKE_EXT4_SYSFS: u32 = 0xc0004b11; // _IOC(_IOC_READ|_IOC_WRITE, 'K', 17, 0)
+const KSU_IOCTL_NUKE_EXT4_SYSFS: u32 = 0x40004b11; // _IOC(_IOC_WRITE, 'K', 17, 0)
 
 #[repr(C)]
 #[derive(Clone, Copy, Default)]