diff --git a/src/pythoncapi_compat.h b/src/pythoncapi_compat.h
index ccbd1a34..d78a78ac 100644
--- a/src/pythoncapi_compat.h
+++ b/src/pythoncapi_compat.h
@@ -1268,10 +1268,9 @@ PyLong_Export(PyObject *obj, PyLongExport *export_long)
     int overflow;
 #if SIZEOF_LONG == 8
     long value = PyLong_AsLongAndOverflow(obj, &overflow);
-#elif SIZEOF_LONG_LONG == 8
-    long long value = PyLong_AsLongLongAndOverflow(obj, &overflow);
 #else
-#   error "unable to convert a long to int64_t"
+    // Windows has 32-bit long, so use 64-bit long long instead
+    long long value = PyLong_AsLongLongAndOverflow(obj, &overflow);
 #endif
 
     if (!overflow) {