diff --git a/include/common/buffer.h b/include/common/buffer.h
index dde0fcc63..6f3ab26a1 100644
--- a/include/common/buffer.h
+++ b/include/common/buffer.h
@@ -61,14 +61,6 @@ void buffer_dump(FILE *o, struct buffer *b, int from, int to);
 
 /***** FIXME: OLD API BELOW *****/
 
-/* Normalizes a pointer after a subtract */
-static inline char *buffer_wrap_sub(const struct buffer *buf, char *ptr)
-{
-	if (ptr < buf->data)
-		ptr += buf->size;
-	return ptr;
-}
-
 /* Normalizes a pointer after an addition */
 static inline char *buffer_wrap_add(const struct buffer *buf, char *ptr)
 {
diff --git a/include/proto/channel.h b/include/proto/channel.h
index 2cbbf9686..b84ccc9e8 100644
--- a/include/proto/channel.h
+++ b/include/proto/channel.h
@@ -823,7 +823,7 @@ static inline int co_getchr(struct channel *chn)
 			return -2;
 		return -1;
 	}
-	return *buffer_wrap_sub(chn->buf, chn->buf->p - chn->buf->o);
+	return *co_head(chn);
 }