diff --git a/ANNOUNCE b/ANNOUNCE
index b89228b0c..710fa5e02 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.7.0beta57 - March 11, 2015
+Libpng 1.7.0beta57 - March 15, 2015
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -750,7 +750,8 @@ Version 1.7.0beta56 [March 11, 2015]
   Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
     for consistency, and remove some useless tests (Alexey Petruchik).
 
-Version 1.7.0beta57 [March 11, 2015]
+Version 1.7.0beta57 [March 15, 2015]
+  Remove pnglibconf.h, not pnglibconf.* in "make clean" (Cosmin).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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diff --git a/CHANGES b/CHANGES
index 0d63860ba..a8a16e934 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5040,7 +5040,8 @@ Version 1.7.0beta56 [March 11, 2015]
   Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
     for consistency, and remove some useless tests (Alexey Petruchik).
 
-Version 1.7.0beta57 [March 11, 2015]
+Version 1.7.0beta57 [March 15, 2015]
+  Remove pnglibconf.h, not pnglibconf.* in "make clean" (Cosmin).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/Makefile.am b/Makefile.am
index 3e9cc762e..f8a07ec69 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -133,7 +133,7 @@ SCRIPT_CLEANFILES=scripts/*.out scripts/*.chk scripts/pnglibconf.c
 
 CLEANFILES= *.tf? pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers libpng.sym \
-	check.new pnglibconf.* pngprefix.h symbols.new pngtest-log.txt \
+	check.new pnglibconf.h pngprefix.h symbols.new pngtest-log.txt \
 	$(SCRIPT_CLEANFILES)
 
 MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
diff --git a/scripts/makefile.std b/scripts/makefile.std
index 75bb2de62..bd28d0f01 100644
--- a/scripts/makefile.std
+++ b/scripts/makefile.std
@@ -106,7 +106,7 @@ install: libpng.a pnglibconf.h
 	chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
 
 clean:
-	$(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.*
+	$(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.h
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock:
diff --git a/scripts/pnglibconf.mak b/scripts/pnglibconf.mak
index c7117ddc4..bccb2a0e4 100755
--- a/scripts/pnglibconf.mak
+++ b/scripts/pnglibconf.mak
@@ -49,6 +49,6 @@ pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $
 	$(MOVE) pnglibconf.tmp $@
 
 clean-pnglibconf:
-	$(DELETE) pnglibconf.*
+	$(DELETE) pnglibconf.h
 
 clean: clean-pnglibconf