diff --git a/lib/std/libc/os/win32.c3 b/lib/std/libc/os/win32.c3
index c8fd0146d..b480fb7eb 100644
--- a/lib/std/libc/os/win32.c3
+++ b/lib/std/libc/os/win32.c3
@@ -15,7 +15,7 @@ extern fn Time_t _mkgmtime64(Tm* timeptr); def timegm = _mkgmtime64;
 extern fn Time_t _mktime64(Tm *timeptr); def mktime = _mktime64;
 extern fn usz _msize(void* ptr);
 extern fn CInt _read(Fd fd, void* buffer, CUInt buffer_size);
-extern fn CInt _setjmp(void* frameptr, JmpBuf* buffer);
+extern fn CInt _setjmp(JmpBuf* buffer, void* frameptr);
 extern fn CFile _wfopen(WString, WString);
 extern fn CFile _wfreopen(WString, WString, CFile);
 extern fn CInt _write(Fd fd, void* buffer, CUInt count);
@@ -47,7 +47,7 @@ extern fn CInt get_system_info(SystemInfo*) @extern("GetSystemInfo");
 
 // Aliases to simplify libc use
 macro Tm* localtime_r(Time_t* timer, Tm* buf) => _localtime64_s(buf, timer);
-macro CInt setjmp(JmpBuf* buffer) => _setjmp($$frameaddress(0), buffer);
+macro CInt setjmp(JmpBuf* buffer) => _setjmp(buffer, null);
 macro Tm* gmtime_r(Time_t* timer, Tm* buf) => _gmtime64_s(buf, timer);
 macro isz read(Fd fd, void* buffer, usz buffer_size) => _read(fd, buffer, (CUInt)buffer_size);
 macro isz write(Fd fd, void* buffer, usz count) => _write(fd, buffer, (CUInt)count);
\ No newline at end of file
diff --git a/releasenotes.md b/releasenotes.md
index 81e9046fa..d7c7d8f3f 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -60,12 +60,13 @@
 - `%` analysis was incorrect for int vectors.
 - When resolving inherited interfaces, the interface type wasn't always resolved.
 - Fix issues when checking methods and interfaces hasn't been resolved yet.
+- Fix Vec2.angle
+- Update to libc::setjmp on Win32, to do no stack unwinding.
 
 ### Stdlib changes
 
 - `send` and `recv` added to `libc` for Posix / Win32.
 - Add support to destroy temp allocators.
-- Fix Vec2.angle
 
 ## 0.6.1 Change list