diff --git a/thirdparty/libjpeg-turbo/src/jmorecfg.h b/thirdparty/libjpeg-turbo/src/jmorecfg.h
index 89c7842c87..c96edd2300 100644
--- a/thirdparty/libjpeg-turbo/src/jmorecfg.h
+++ b/thirdparty/libjpeg-turbo/src/jmorecfg.h
@@ -1,3 +1,5 @@
+// Modified to remove lossless jpeg support.
+
 /*
  * jmorecfg.h
  *
@@ -242,7 +244,7 @@ typedef int boolean;
 
 #define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
 #define C_PROGRESSIVE_SUPPORTED     /* Progressive JPEG? (Requires MULTISCAN)*/
-#define C_LOSSLESS_SUPPORTED        /* Lossless JPEG? */
+//#define C_LOSSLESS_SUPPORTED        /* Lossless JPEG? */
 #define ENTROPY_OPT_SUPPORTED       /* Optimization of entropy coding parms? */
 /* Note: if you selected 12-bit data precision, it is dangerous to turn off
  * ENTROPY_OPT_SUPPORTED.  The standard Huffman tables are only good for 8-bit
@@ -259,7 +261,7 @@ typedef int boolean;
 
 #define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
 #define D_PROGRESSIVE_SUPPORTED     /* Progressive JPEG? (Requires MULTISCAN)*/
-#define D_LOSSLESS_SUPPORTED        /* Lossless JPEG? */
+//#define D_LOSSLESS_SUPPORTED        /* Lossless JPEG? */
 #define SAVE_MARKERS_SUPPORTED      /* jpeg_save_markers() needed? */
 #define BLOCK_SMOOTHING_SUPPORTED   /* Block smoothing? (Progressive only) */
 #define IDCT_SCALING_SUPPORTED      /* Output rescaling via IDCT? */
diff --git a/thirdparty/libjpeg-turbo/src/turbojpeg.c b/thirdparty/libjpeg-turbo/src/turbojpeg.c
index 23dbe6bb75..969174f72e 100644
--- a/thirdparty/libjpeg-turbo/src/turbojpeg.c
+++ b/thirdparty/libjpeg-turbo/src/turbojpeg.c
@@ -1196,9 +1196,6 @@ bailout:
 #define BITS_IN_JSAMPLE  12
 #include "turbojpeg-mp.c"
 #undef BITS_IN_JSAMPLE
-#define BITS_IN_JSAMPLE  16
-#include "turbojpeg-mp.c"
-#undef BITS_IN_JSAMPLE
 
 /* TurboJPEG 1.2+ */
 DLLEXPORT int tjCompress2(tjhandle handle, const unsigned char *srcBuf,