diff --git a/ANNOUNCE b/ANNOUNCE
index aa7510f32..855b8c7d4 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -258,6 +258,7 @@ version 1.5.0beta32 [June 26, 2010]
   Made FIXED and FLOATING options consistent in the APIs they enable and
     disable.  Corrected scripts/options.awk to handle both command line
     options and options specified in the .dfa files.
+  Changed char *msg to PNG_CONST char *msg in pngrutil.c
   Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or
     floating point APIs, but not both.
 
diff --git a/CHANGES b/CHANGES
index 1dacdbeb2..f6b6731ad 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2740,6 +2740,7 @@ version 1.5.0beta33 [June 26, 2010]
   Made FIXED and FLOATING options consistent in the APIs they enable and
     disable.  Corrected scripts/options.awk to handle both command line
     options and options specified in the .dfa files.
+  Changed char *msg to PNG_CONST char *msg in pngrutil.c
   Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or
     floating point APIs, but not both.
 
diff --git a/pngrutil.c b/pngrutil.c
index c91b1c80f..fdd7ae64a 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -267,7 +267,7 @@ png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
        * buffer if available.
        */
       {
-         char *msg;
+         PNG_CONST char *msg;
 #ifdef PNG_CONSOLE_IO_SUPPORTED
 	 char umsg[52];
 #endif