diff --git a/tools/python/xen/lowlevel/xc/xc.c b/tools/python/xen/lowlevel/xc/xc.c
index c7c09efbc1..d7452fabd1 100644
--- a/tools/python/xen/lowlevel/xc/xc.c
+++ b/tools/python/xen/lowlevel/xc/xc.c
@@ -847,7 +847,7 @@ static PyObject *pyxc_domain_setmaxmem(PyObject *self,
     XcObject *xc = (XcObject *)self;
 
     u32 dom;
-    unsigned long maxmem_kb;
+    unsigned int maxmem_kb;
 
     static char *kwd_list[] = { "dom", "maxmem_kb", NULL };
 
@@ -1178,7 +1178,7 @@ static PyMethodDef pyxc_methods[] = {
       METH_VARARGS | METH_KEYWORDS, "\n"
       "Set a domain's memory limit\n"
       " dom [int]: Identifier of domain.\n"
-      " maxmem_kb [long]: .\n"
+      " maxmem_kb [int]: .\n"
       "Returns: [int] 0 on success; -1 on error.\n" },
 
     { "domain_memory_increase_reservation",