diff --git a/ext/libxml/php_libxml2.def b/ext/libxml/php_libxml2.def
index 5980df8bf889..06c05f188e8f 100644
--- a/ext/libxml/php_libxml2.def
+++ b/ext/libxml/php_libxml2.def
@@ -345,7 +345,6 @@ xmlElemDump
 xmlEncodeEntities
 xmlEncodeEntitiesReentrant
 xmlEncodeSpecialChars
-xmlErrMemory
 xmlFileClose
 xmlFileMatch
 xmlFileOpen