diff --git a/ANNOUNCE b/ANNOUNCE
index 7598e4a9f..f6449dec2 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -65,6 +65,7 @@ Version 1.5.1beta06 [January 20, 2011]
     end without returning anything.
 
 Version 1.5.1rc01 [January 21, 2011]
+  In the manual, describe the png_get_IHDR() arguments in the correct order.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index f8b50d8f6..d1f391545 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3181,6 +3181,7 @@ Version 1.5.1beta06 [January 20, 2011]
     end without returning anything.
 
 Version 1.5.1rc01 [January 21, 2011]
+  In the manual, describe the png_get_IHDR() arguments in the correct order.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/libpng-manual.txt b/libpng-manual.txt
index e1eaa0f80..240308329 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -748,15 +748,17 @@ in until png_read_end() has read the chunk data following the image.
                      PNG_COLOR_MASK_COLOR
                      PNG_COLOR_MASK_ALPHA
 
+    interlace_type - (PNG_INTERLACE_NONE or
+                     PNG_INTERLACE_ADAM7)
+
+    compression_type - (must be PNG_COMPRESSION_TYPE_BASE
+                     for PNG 1.0)
+
     filter_method  - (must be PNG_FILTER_TYPE_BASE
                      for PNG 1.0, and can also be
                      PNG_INTRAPIXEL_DIFFERENCING if
                      the PNG datastream is embedded in
                      a MNG-1.0 datastream)
-    compression_type - (must be PNG_COMPRESSION_TYPE_BASE
-                     for PNG 1.0)
-    interlace_type - (PNG_INTERLACE_NONE or
-                     PNG_INTERLACE_ADAM7)
 
     Any or all of interlace_type, compression_type, or
     filter_method can be NULL if you are
@@ -777,11 +779,11 @@ in until png_read_end() has read the chunk data following the image.
                          info_ptr);
     color_type       = png_get_color_type(png_ptr,
                          info_ptr);
-    filter_method    = png_get_filter_type(png_ptr,
+    interlace_type   = png_get_interlace_type(png_ptr,
                          info_ptr);
     compression_type = png_get_compression_type(png_ptr,
                          info_ptr);
-    interlace_type   = png_get_interlace_type(png_ptr,
+    filter_method    = png_get_filter_type(png_ptr,
                          info_ptr);
 
     channels = png_get_channels(png_ptr, info_ptr);
diff --git a/libpng.3 b/libpng.3
index aa07d287f..77aba88ee 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1599,15 +1599,17 @@ in until png_read_end() has read the chunk data following the image.
                      PNG_COLOR_MASK_COLOR
                      PNG_COLOR_MASK_ALPHA
 
+    interlace_type - (PNG_INTERLACE_NONE or
+                     PNG_INTERLACE_ADAM7)
+
+    compression_type - (must be PNG_COMPRESSION_TYPE_BASE
+                     for PNG 1.0)
+
     filter_method  - (must be PNG_FILTER_TYPE_BASE
                      for PNG 1.0, and can also be
                      PNG_INTRAPIXEL_DIFFERENCING if
                      the PNG datastream is embedded in
                      a MNG-1.0 datastream)
-    compression_type - (must be PNG_COMPRESSION_TYPE_BASE
-                     for PNG 1.0)
-    interlace_type - (PNG_INTERLACE_NONE or
-                     PNG_INTERLACE_ADAM7)
 
     Any or all of interlace_type, compression_type, or
     filter_method can be NULL if you are
@@ -1628,11 +1630,11 @@ in until png_read_end() has read the chunk data following the image.
                          info_ptr);
     color_type       = png_get_color_type(png_ptr,
                          info_ptr);
-    filter_method    = png_get_filter_type(png_ptr,
+    interlace_type   = png_get_interlace_type(png_ptr,
                          info_ptr);
     compression_type = png_get_compression_type(png_ptr,
                          info_ptr);
-    interlace_type   = png_get_interlace_type(png_ptr,
+    filter_method    = png_get_filter_type(png_ptr,
                          info_ptr);
 
     channels = png_get_channels(png_ptr, info_ptr);