diff --git a/src/if_python3.c b/src/if_python3.c
index 8a5b332..40bc97b 100644
--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -302,7 +302,7 @@
 static PyObject* (*py3_PyRun_String)(char *, int, PyObject *, PyObject *);
 static PyObject* (*py3_PyObject_GetAttrString)(PyObject *, const char *);
 static int (*py3_PyObject_HasAttrString)(PyObject *, const char *);
-static PyObject* (*py3_PyObject_SetAttrString)(PyObject *, const char *, PyObject *);
+static int (*py3_PyObject_SetAttrString)(PyObject *, const char *, PyObject *);
 static PyObject* (*py3_PyObject_CallFunctionObjArgs)(PyObject *, ...);
 static PyObject* (*py3__PyObject_CallFunction_SizeT)(PyObject *, char *, ...);
 static PyObject* (*py3_PyObject_Call)(PyObject *, PyObject *, PyObject *);