diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 7f3b0e7..7736ac3 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -4316,7 +4316,7 @@
     d = PyDict_New();
     if (d != NULL) {
         PyObject *o;
-        int i = 0;
+        size_t i = 0;
 
         for (; i < tablesize; ++i) {
             o = PyInt_FromLong(table[i].value);