diff --git a/lib/std/posix.zig b/lib/std/posix.zig
index 9e1631dd20..94b37a0878 100644
--- a/lib/std/posix.zig
+++ b/lib/std/posix.zig
@@ -4628,9 +4628,7 @@ pub const MProtectError = error{
     OutOfMemory,
 } || UnexpectedError;
 
-/// `memory.len` must be page-aligned.
 pub fn mprotect(memory: []align(mem.page_size) u8, protection: u32) MProtectError!void {
-    assert(mem.isAligned(memory.len, mem.page_size));
     if (native_os == .windows) {
         const win_prot: windows.DWORD = switch (@as(u3, @truncate(protection))) {
             0b000 => windows.PAGE_NOACCESS,