diff --git a/include/libxml/parserInternals.h b/include/libxml/parserInternals.h
index 9d2b1d82..1a38e324 100644
--- a/include/libxml/parserInternals.h
+++ b/include/libxml/parserInternals.h
@@ -91,14 +91,6 @@ XMLPUBVAR const unsigned int xmlParserMaxDepth;
  */
 #define XML_MAX_NAMELEN 100
 
-/**
- * INPUT_CHUNK:
- *
- * The parser tries to always have that amount of input ready.
- * One of the point is providing context when reporting errors.
- */
-#define INPUT_CHUNK	250
-
 /**
  * IS_BLANK:
  * @c:  an UNICODE value (int)
diff --git a/include/private/parser.h b/include/private/parser.h
index 68803b3d..47fce207 100644
--- a/include/private/parser.h
+++ b/include/private/parser.h
@@ -60,6 +60,14 @@
 #define IS_PUBIDCHAR(c)     xmlIsPubidCharQ(c)
 #define IS_PUBIDCHAR_CH(c)  xmlIsPubidChar_ch(c)
 
+/**
+ * INPUT_CHUNK:
+ *
+ * The parser tries to always have that amount of input ready.
+ * One of the point is providing context when reporting errors.
+ */
+#define INPUT_CHUNK	250
+
 struct _xmlAttrHashBucket {
     int index;
 };