diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-06-23-00-25-53.gh-issue-94149.e0Q1dg.rst b/Misc/NEWS.d/next/Core and Builtins/2022-06-23-00-25-53.gh-issue-94149.e0Q1dg.rst
new file mode 100644
index 000000000000000..57eae83227002ae
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-06-23-00-25-53.gh-issue-94149.e0Q1dg.rst	
@@ -0,0 +1 @@
+Fixed an unaligned write in convertsimple() which could crash on architectures requiring strict alignment, e.g. sparc.
diff --git a/Python/getargs.c b/Python/getargs.c
index fb4a5124beab8a6..f3aef2e839392f5 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -919,7 +919,7 @@ convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
         if (*format == '#') {
             REQUIRE_PY_SSIZE_T_CLEAN;
             Py_ssize_t *psize = va_arg(*p_va, Py_ssize_t*);
-            *psize = count;
+            memcpy(psize, &count, sizeof(Py_ssize_t));
             format++;
         } else {
             if (strlen(*p) != (size_t)count) {