diff --git a/ext/tidy/php_tidy.def b/ext/tidy/php_tidy.def
index 1c17276de6d..1d438a7162f 100644
--- a/ext/tidy/php_tidy.def
+++ b/ext/tidy/php_tidy.def
@@ -12,8 +12,6 @@ tidyBufPopByte
 tidyBufGetByte
 tidyBufEndOfInput
 tidyBufUngetByte
-initInputBuffer
-initOutputBuffer
 tidyCreate
 tidyRelease
 tidySetAppData