diff --git a/lib/libgeom/geom_xml2tree.c b/lib/libgeom/geom_xml2tree.c
index d5d4f31fd85..2c23361b166 100644
--- a/lib/libgeom/geom_xml2tree.c
+++ b/lib/libgeom/geom_xml2tree.c
@@ -257,6 +257,7 @@ EndElement(void *userData, const char *name)
 
 	if (!strcmp(name, "config")) {
 		mt->config = NULL;
+		free(p);
 		return;
 	}