diff --git a/libImaging/Imaging.h b/libImaging/Imaging.h
index 6bcd2401b..0a8bff32c 100644
--- a/libImaging/Imaging.h
+++ b/libImaging/Imaging.h
@@ -465,12 +465,9 @@ extern int ImagingZipEncodeCleanup(ImagingCodecState state);
 typedef void (*ImagingShuffler)(UINT8* out, const UINT8* in, int pixels);
 
 /* Public shufflers */
-extern void ImagingPackRGB(UINT8* out, const UINT8* in, int pixels);
 extern void ImagingPackBGR(UINT8* out, const UINT8* in, int pixels);
-extern void ImagingUnpackBGR(UINT8* out, const UINT8* in, int pixels);
 extern void ImagingUnpackYCC(UINT8* out, const UINT8* in, int pixels);
 extern void ImagingUnpackYCCA(UINT8* out, const UINT8* in, int pixels);
-extern void ImagingUnpackYCbCr(UINT8* out, const UINT8* in, int pixels);
 
 extern void ImagingConvertRGB2YCbCr(UINT8* out, const UINT8* in, int pixels);
 extern void ImagingConvertYCbCr2RGB(UINT8* out, const UINT8* in, int pixels);