diff --git a/ANNOUNCE b/ANNOUNCE
index f71624e00..424eb1612 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -86,6 +86,9 @@ version 1.5.0beta12 [March 9, 2010]
 
 version 1.5.0beta13 [March 9, 2010]
   Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice.
+  Revise the "#ifdef" blocks in png_inflate() so it will compile when neither
+    PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+    is defined.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index 771a35174..e00230324 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2563,6 +2563,9 @@ version 1.5.0beta12 [March 9, 2010]
 
 version 1.5.0beta13 [March 9, 2010]
   Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice.
+  Revise the "#ifdef" blocks in png_inflate() so it will compile when neither
+    PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+    is defined.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/pngrutil.c b/pngrutil.c
index 2506d58fe..3f891bdc8 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -325,8 +325,10 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
       if (png_ptr->user_chunk_malloc_max &&
           (prefix_size + expanded_size >= png_ptr->user_chunk_malloc_max - 1))
 #else
+#  ifdef PNG_USER_CHUNK_MALLOC_MAX
       if ((PNG_USER_CHUNK_MALLOC_MAX > 0) &&
           prefix_size + expanded_size >= PNG_USER_CHUNK_MALLOC_MAX - 1)
+#  endif
 #endif
          png_warning(png_ptr, "Exceeded size limit while expanding chunk");
 
@@ -335,7 +337,12 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
        * and we have nothing to do - the code will exit through the
        * error case below.
        */
+#if defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED) || \
+    defined(PNG_USER_CHUNK_MALLOC_MAX)
       else if (expanded_size > 0)
+#else
+      if (expanded_size > 0)
+#endif
       {
          /* Success (maybe) - really uncompress the chunk. */
          png_size_t new_size = 0;