diff --git a/libavcodec/mpegvideo_common.h b/libavcodec/mpegvideo_common.h
index 9f6307ea7c..faa50e6ef0 100644
--- a/libavcodec/mpegvideo_common.h
+++ b/libavcodec/mpegvideo_common.h
@@ -41,12 +41,6 @@
 
 int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
 
-/**
- * Allocate a Picture.
- * The pixels are allocated/set by calling get_buffer() if shared = 0.
- */
-int alloc_picture(MpegEncContext *s, Picture *pic, int shared);
-
 /**
  * Set the given MpegEncContext to common defaults (same for encoding and decoding).
  * The changed fields will not depend upon the prior state of the MpegEncContext.