diff --git a/libc-test/build.rs b/libc-test/build.rs
index 91f1fdfe7a19d..2cfeb098fc2ba 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -4475,10 +4475,6 @@ fn test_linux(target: &str) {
             "SO_DEVMEM_LINEAR" | "SO_DEVMEM_DMABUF" | "SO_DEVMEM_DONTNEED"
             | "SCM_DEVMEM_LINEAR" | "SCM_DEVMEM_DMABUF" => true,
 
-            // FIXME(linux): Requires >= 6.4 kernel headers.
-            "PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG"
-            | "PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG" => true,
-
             // FIXME(linux): Requires >= 6.14 kernel headers.
             "SECBIT_EXEC_DENY_INTERACTIVE"
             | "SECBIT_EXEC_DENY_INTERACTIVE_LOCKED"
diff --git a/src/unix/linux_like/linux/gnu/mod.rs b/src/unix/linux_like/linux/gnu/mod.rs
index d95795133934f..b88e318ffce7d 100644
--- a/src/unix/linux_like/linux/gnu/mod.rs
+++ b/src/unix/linux_like/linux/gnu/mod.rs
@@ -752,8 +752,8 @@ pub const PTRACE_SYSCALL_INFO_NONE: crate::__u8 = 0;
 pub const PTRACE_SYSCALL_INFO_ENTRY: crate::__u8 = 1;
 pub const PTRACE_SYSCALL_INFO_EXIT: crate::__u8 = 2;
 pub const PTRACE_SYSCALL_INFO_SECCOMP: crate::__u8 = 3;
-pub const PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG: crate::__u8 = 0x4210;
-pub const PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG: crate::__u8 = 0x4211;
+pub const PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG: c_uint = 0x4210;
+pub const PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG: c_uint = 0x4211;
 
 // linux/rtnetlink.h
 pub const TCA_PAD: c_ushort = 9;