diff --git a/ext/libxml/php_libxml2.def b/ext/libxml/php_libxml2.def
index f4be787c8abde..5980df8bf8891 100644
--- a/ext/libxml/php_libxml2.def
+++ b/ext/libxml/php_libxml2.def
@@ -1,5 +1,4 @@
 EXPORTS
-__docbDefaultSAXHandler
 __htmlDefaultSAXHandler
 __oldXMLWDcompatibility
 __xmlBufferAllocScheme
@@ -53,17 +52,6 @@ cdataBlock
 characters
 checkNamespace
 comment
-docbCreateFileParserCtxt
-docbCreatePushParserCtxt
-docbDefaultSAXHandlerInit
-docbEncodeEntities
-docbFreeParserCtxt
-docbParseChunk
-docbParseDoc
-docbParseDocument
-docbParseFile
-docbSAXParseDoc
-docbSAXParseFile
 elementDecl
 endDocument
 endElement
@@ -137,7 +125,6 @@ htmlSetMetaEncoding
 htmlTagLookup
 ignorableWhitespace
 initGenericErrorDefaultFunc
-initdocbDefaultSAXHandler
 inithtmlDefaultSAXHandler
 initxmlDefaultSAXHandler
 inputPop
@@ -801,7 +788,6 @@ xmlRegisterHTTPPostCallbacks
 xmlRegisterInputCallbacks
 xmlRegisterNodeDefault
 xmlRegisterOutputCallbacks
-xmlRelaxNGCleanupTypes
 xmlRelaxNGDump
 xmlRelaxNGDumpTree
 xmlRelaxNGFree
@@ -849,7 +835,6 @@ xmlSAX2HasExternalSubset
 xmlSAX2HasInternalSubset
 xmlSAX2IgnorableWhitespace
 xmlSAX2InitDefaultSAXHandler
-xmlSAX2InitDocbDefaultSAXHandler
 xmlSAX2InitHtmlDefaultSAXHandler
 xmlSAX2InternalSubset
 xmlSAX2IsStandalone
@@ -1523,27 +1508,8 @@ xmlXPathWrapExternal
 xmlXPathWrapNodeSet
 xmlXPathWrapString
 xmlXPatherror
-xmlXPtrBuildNodeList
 xmlXPtrEval
-xmlXPtrEvalRangePredicate
-xmlXPtrFreeLocationSet
-xmlXPtrLocationSetAdd
-xmlXPtrLocationSetCreate
-xmlXPtrLocationSetDel
-xmlXPtrLocationSetMerge
-xmlXPtrLocationSetRemove
-xmlXPtrNewCollapsedRange
 xmlXPtrNewContext
-xmlXPtrNewLocationSetNodeSet
-xmlXPtrNewLocationSetNodes
-xmlXPtrNewRange
-xmlXPtrNewRangeNodeObject
-xmlXPtrNewRangeNodePoint
-xmlXPtrNewRangeNodes
-xmlXPtrNewRangePointNode
-xmlXPtrNewRangePoints
-xmlXPtrRangeToFunction
-xmlXPtrWrapLocationSet
 xmlBufContent
 xmlBufUse
 xmlBufferDetach