diff --git a/srcpkgs/libxml2-python/patches/py39compat.patch b/srcpkgs/libxml2-python/patches/py39compat.patch
new file mode 100644
index 00000000000..c5dbfabbaa4
--- /dev/null
+++ b/srcpkgs/libxml2-python/patches/py39compat.patch
@@ -0,0 +1,68 @@
+--- python/libxml.c.orig	2020-10-07 14:41:45.226029584 -0400
++++ python/libxml.c	2020-10-07 14:42:58.965113111 -0400
+@@ -294,7 +294,7 @@
+ 	lenread = PyBytes_Size(ret);
+ 	data = PyBytes_AsString(ret);
+ #ifdef PyUnicode_Check
+-    } else if PyUnicode_Check (ret) {
++    } else if (PyUnicode_Check (ret)) {
+ #if PY_VERSION_HEX >= 0x03030000
+         Py_ssize_t size;
+ 	const char *tmp;
+@@ -359,7 +359,7 @@
+ 	lenread = PyBytes_Size(ret);
+ 	data = PyBytes_AsString(ret);
+ #ifdef PyUnicode_Check
+-    } else if PyUnicode_Check (ret) {
++    } else if (PyUnicode_Check (ret)) {
+ #if PY_VERSION_HEX >= 0x03030000
+         Py_ssize_t size;
+ 	const char *tmp;
+--- python/types.c.orig	2020-10-07 14:41:49.393034304 -0400
++++ python/types.c	2020-10-07 14:42:23.496072934 -0400
+@@ -602,16 +602,16 @@
+     if (obj == NULL) {
+         return (NULL);
+     }
+-    if PyFloat_Check (obj) {
++    if (PyFloat_Check (obj)) {
+         ret = xmlXPathNewFloat((double) PyFloat_AS_DOUBLE(obj));
+-    } else if PyLong_Check(obj) {
++    } else if (PyLong_Check(obj)) {
+ #ifdef PyLong_AS_LONG
+         ret = xmlXPathNewFloat((double) PyLong_AS_LONG(obj));
+ #else
+         ret = xmlXPathNewFloat((double) PyInt_AS_LONG(obj));
+ #endif
+ #ifdef PyBool_Check
+-    } else if PyBool_Check (obj) {
++    } else if (PyBool_Check (obj)) {
+ 
+         if (obj == Py_True) {
+           ret = xmlXPathNewBoolean(1);
+@@ -620,14 +620,14 @@
+           ret = xmlXPathNewBoolean(0);
+         }
+ #endif
+-    } else if PyBytes_Check (obj) {
++    } else if (PyBytes_Check (obj)) {
+         xmlChar *str;
+ 
+         str = xmlStrndup((const xmlChar *) PyBytes_AS_STRING(obj),
+                          PyBytes_GET_SIZE(obj));
+         ret = xmlXPathWrapString(str);
+ #ifdef PyUnicode_Check
+-    } else if PyUnicode_Check (obj) {
++    } else if (PyUnicode_Check (obj)) {
+ #if PY_VERSION_HEX >= 0x03030000
+         xmlChar *str;
+ 	const char *tmp;
+@@ -650,7 +650,7 @@
+ 	ret = xmlXPathWrapString(str);
+ #endif
+ #endif
+-    } else if PyList_Check (obj) {
++    } else if (PyList_Check (obj)) {
+         int i;
+         PyObject *node;
+         xmlNodePtr cur;
diff --git a/srcpkgs/libxml2-python/template b/srcpkgs/libxml2-python/template
index dbd701f1fe4..4208519dac3 100644
--- a/srcpkgs/libxml2-python/template
+++ b/srcpkgs/libxml2-python/template
@@ -1,7 +1,7 @@
 # Template file for 'libxml2-python'
 pkgname=libxml2-python
 version=2.9.10
-revision=2
+revision=3
 wrksrc="${pkgname%-python}-${version}"
 build_wrksrc=python
 build_style=python-module
@@ -15,8 +15,10 @@ homepage="http://www.xmlsoft.org/"
 distfiles="http://xmlsoft.org/sources/libxml2-${version}.tar.gz"
 checksum=aafee193ffb8fe0c82d4afef6ef91972cbaf5feea100edc2f262750611b4be1f
 
-pre_build() {
-	sed "s:/usr/include:${XBPS_CROSS_BASE}/usr/include:" -i setup.py
+post_patch() {
+	if [ "${CROSS_BUILD}" ]; then
+		vsed -i setup.py -e "s:/usr/include:${XBPS_CROSS_BASE}/usr/include:"
+	fi
 }
 
 post_install() {