diff --git a/winsup/lsaauth/ChangeLog b/winsup/lsaauth/ChangeLog
index bd0ecbd1c..0056d2bd2 100644
--- a/winsup/lsaauth/ChangeLog
+++ b/winsup/lsaauth/ChangeLog
@@ -1,3 +1,9 @@
+2013-07-29  Corinna Vinschen  <corinna@vinschen.de>
+
+	* Makefile.in (cyglsa.dll): Explicitely specify DLL entry point to
+	harden against gcc function and block reordering optimizations.
+	(cyglsa64.dll): Ditto.
+
 2013-04-23  Corinna Vinschen  <corinna@vinschen.de>
 
 	* Merge in cygwin-64bit-branch.  See ChangeLog.64bit for details.
diff --git a/winsup/lsaauth/Makefile.in b/winsup/lsaauth/Makefile.in
index 162e5aa0c..53e91c406 100644
--- a/winsup/lsaauth/Makefile.in
+++ b/winsup/lsaauth/Makefile.in
@@ -67,13 +67,13 @@ $(DEF32): cyglsa.din config.status
 	$(SHELL) config.status
 
 $(DLL32): $(OBJ32) $(DEF32)
-	$(MINGW32_CC) -s $(WIN32_LDFLAGS) -o $@ $^ $(LIBS)
+	$(MINGW32_CC) -s $(WIN32_LDFLAGS) -e _DllMain@12 -o $@ $^ $(LIBS)
 
 $(OBJ32): cyglsa.c
 	$(MINGW32_CC) $(WIN32_CFLAGS) -c -o $@ $<
 
 $(DLL64): $(OBJ64) $(DEF64)
-	$(MINGW64_CC) -s $(WIN32_LDFLAGS) -o $@ $^ $(LIBS)
+	$(MINGW64_CC) -s $(WIN32_LDFLAGS) -e DllMain -o $@ $^ $(LIBS)
 
 $(OBJ64): cyglsa.c
 	$(MINGW64_CC) $(WIN32_CFLAGS) -c -o $@ $<