--- freepv-0.3.0.orig/src/libfreepv/pngReader.cpp
+++ freepv-0.3.0/src/libfreepv/pngReader.cpp
@@ -135,7 +135,7 @@
     //Transfor grayscale images with less
     //than 8 bits to 8 bits
     if(color_t == PNG_COLOR_TYPE_GRAY && depth<8)
-      png_set_gray_1_2_4_to_8(p_png_struct);
+      png_set_expand_gray_1_2_4_to_8(p_png_struct);
 
     //Add a full alpha channel if there is
     //transparency information in the tRNS chunk
@@ -283,7 +283,7 @@
     //Transfor grayscale images with less
     //than 8 bits to 8 bits.
     if(color_t == PNG_COLOR_TYPE_GRAY && depth<8)
-      png_set_gray_1_2_4_to_8(p_png_struct);
+      png_set_expand_gray_1_2_4_to_8(p_png_struct);
 
     //Add a full alpha channel if there is
     //transparency information in the tRNS chunk