diff --git a/pngwutil.c b/pngwutil.c
index 437a535..973b0ae 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.0.5s - February 18, 2000
+ * libpng 1.0.6 - March 21, 2000
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
@@ -179,7 +179,6 @@
 #else
       png_warning(png_ptr, "Unknown compression type");
 #endif
-      compression = PNG_TEXT_COMPRESSION_zTXt;
    }
 
    /* We can't write the chunk until we find out how much data we have,
@@ -642,7 +641,7 @@
    }
 
    if (compression_type)
-      /* ignore */ ;
+      png_warning(png_ptr, "Unknown compression type in iCCP chunk");
 
    if (profile == NULL || *profile == '\0')
       profile_len = 0;
@@ -667,7 +666,7 @@
 #if defined(PNG_WRITE_sPLT_SUPPORTED)
 /* write a sPLT chunk */
 void
-png_write_sPLT(png_structp png_ptr, png_spalette_p spalette)
+png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
 {
 #ifdef PNG_USE_LOCAL_ARRAYS
    PNG_sPLT;
@@ -677,10 +676,11 @@
    png_byte entrybuf[10];
    int entry_size = (spalette->depth == 8 ? 6 : 10);
    int palette_size = entry_size * spalette->nentries;
-   png_spalette_entryp ep;
+   png_sPLT_entryp ep;
 
    png_debug(1, "in png_write_sPLT\n");
-   if (spalette->name == NULL || (name_len = png_check_keyword(png_ptr, spalette->name, &new_name))==0)
+   if (spalette->name == NULL || (name_len = png_check_keyword(png_ptr,
+      spalette->name, &new_name))==0)
    {
       png_warning(png_ptr, "Empty keyword in sPLT chunk");
       return;