diff --git a/contrib/libtests/pngimage.c b/contrib/libtests/pngimage.c
index 4557658aa..b03b33f67 100644
--- a/contrib/libtests/pngimage.c
+++ b/contrib/libtests/pngimage.c
@@ -37,7 +37,7 @@
 #endif
 
 #if defined(PNG_INFO_IMAGE_SUPPORTED) && defined(PNG_SEQUENTIAL_READ_SUPPORTED)\
-    && defined(PNG_READ_PNG_SUPPORTED)
+    && (defined(PNG_READ_PNG_SUPPORTED) || PNG_LIBPNG_VER < 10700)
 /* If a transform is valid on both read and write this implies that if the
  * transform is applied to read it must also be applied on write to produce
  * meaningful data.  This is because these transforms when performed on read
@@ -948,7 +948,7 @@ update_display(struct display *dp)
 
          if ((transform_info[i].valid_chunks == 0 ||
                (transform_info[i].valid_chunks & chunks) != 0) &&
-            (transform_info[i].color_mask_required & ct) == 
+            (transform_info[i].color_mask_required & ct) ==
                transform_info[i].color_mask_required &&
             (transform_info[i].color_mask_absent & ct) == 0 &&
             (transform_info[i].bit_depths & bd) != 0 &&
@@ -1006,7 +1006,7 @@ compare_read(struct display *dp, int applied_transforms)
    {
       unsigned long chunks =
          png_get_valid(dp->read_pp, dp->read_ip, 0xffffffff);
-      
+
       if (chunks != dp->chunks)
          display_log(dp, APP_FAIL, "PNG chunks changed from 0x%lx to 0x%lx",
             (unsigned long)dp->chunks, chunks);