diff --git a/Objects/complexobject.c b/Objects/complexobject.c
index f78c0fd..a49da40 100644
--- a/Objects/complexobject.c
+++ b/Objects/complexobject.c
@@ -55,6 +55,10 @@
     return r;
 }
 
+/* Avoid bad optimization on Windows ARM64 until the compiler is fixed */
+#ifdef _M_ARM64
+#pragma optimize("", off)
+#endif
 Py_complex
 _Py_c_quot(Py_complex a, Py_complex b)
 {
@@ -112,6 +116,9 @@
     }
     return r;
 }
+#ifdef _M_ARM64
+#pragma optimize("", on)
+#endif
 
 Py_complex
 _Py_c_pow(Py_complex a, Py_complex b)