diff --git a/contrib/pngminus/CHANGES.txt b/contrib/pngminus/CHANGES.txt
index 12535b13cf..b4b1a9a8b3 100644
--- a/contrib/pngminus/CHANGES.txt
+++ b/contrib/pngminus/CHANGES.txt
@@ -11,3 +11,4 @@ version 1.0 - 1999.10.15 - First version.
         1.6 - 2018.08.05 - Improve portability and fix style (Cosmin Truta)
         1.7 - 2019.01.22 - Change license to MIT (Willem van Schaik)
         1.8 - 2024.01.09 - Fix, improve, modernize (Cosmin Truta)
+        1.9 - 2025.01.10 - Delete conditionally-compiled code (Cosmin Truta)
diff --git a/contrib/pngminus/png2pnm.c b/contrib/pngminus/png2pnm.c
index 6a1f52e1ac..3c47b91df5 100644
--- a/contrib/pngminus/png2pnm.c
+++ b/contrib/pngminus/png2pnm.c
@@ -235,22 +235,6 @@ BOOL do_png2pnm (png_struct *png_ptr, png_info *info_ptr,
   /* set up (if applicable) the expansion of grayscale images to bit-depth 8 */
   png_set_expand_gray_1_2_4_to_8 (png_ptr);
 
-#ifdef NJET
-  /* downgrade 16-bit images to 8-bit */
-  if (bit_depth == 16)
-    png_set_strip_16 (png_ptr);
-  /* transform grayscale images into full-color */
-  if (color_type == PNG_COLOR_TYPE_GRAY ||
-      color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
-    png_set_gray_to_rgb (png_ptr);
-  /* if the PNG image has a gAMA chunk then gamma-correct the output image */
-  {
-    double file_gamma;
-    if (png_get_gAMA (png_ptr, info_ptr, &file_gamma))
-      png_set_gamma (png_ptr, (double) 2.2, file_gamma);
-  }
-#endif
-
   /* read the image file, with all of the above image transforms applied */
   png_read_png (png_ptr, info_ptr, 0, NULL);