diff --git a/src/utils/common.h b/src/utils/common.h
index 0b9cc3d..6f0de69 100644
--- a/src/utils/common.h
+++ b/src/utils/common.h
@@ -313,6 +313,9 @@
 #ifndef ETH_P_ALL
 #define ETH_P_ALL 0x0003
 #endif
+#ifndef ETH_P_IP
+#define ETH_P_IP 0x0800
+#endif
 #ifndef ETH_P_80211_ENCAP
 #define ETH_P_80211_ENCAP 0x890d /* TDLS comes under this category */
 #endif
diff --git a/src/utils/xml_libxml2.c b/src/utils/xml_libxml2.c
index c928394..7b6d276 100644
--- a/src/utils/xml_libxml2.c
+++ b/src/utils/xml_libxml2.c
@@ -212,6 +212,8 @@
 	xmlDocSetRootElement(doc, n);
 	xmlDocDumpFormatMemory(doc, &buf, &bufsiz, 0);
 	xmlFreeDoc(doc);
+	if (!buf)
+		return NULL;
 	pos = (char *) buf;
 	if (strncmp(pos, "<?xml", 5) == 0) {
 		pos = strchr(pos, '>');