diff --git a/contrib/pngminim/decoder/makefile b/contrib/pngminim/decoder/makefile
index 4acf3c177..a3f96ea14 100644
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -56,7 +56,7 @@ PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
 	pngset$(C) pngtrans$(C)
 	
 # Standard headers
-PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngchunk.h
 
 # Machine generated headers
 PNGCONF=pnglibconf.h
diff --git a/contrib/pngminim/encoder/makefile b/contrib/pngminim/encoder/makefile
index 41b205c28..e6fe33e6e 100644
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -56,7 +56,7 @@ PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
 	pngwtran$(C) pngwutil$(C)
 
 # Standard headers
-PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngchunk.h
 
 # Machine generated headers
 PNGCONF=pnglibconf.h
diff --git a/contrib/pngminim/preader/makefile b/contrib/pngminim/preader/makefile
index b62519911..368d0a3bc 100644
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -72,7 +72,7 @@ PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
 	pngset$(C) pngtrans$(C)
 
 # Standard headers
-PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngchunk.h
 
 # Machine generated headers
 PNGCONF=pnglibconf.h