diff --git a/source/ChangeLog b/source/ChangeLog
index fd576c1..002d132 100644
--- a/source/ChangeLog
+++ b/source/ChangeLog
@@ -1,5 +1,7 @@
 2005-01-11  Andrey Slusar  <anray@users.sourceforge.net>
 
+	* Makefile.in (CFLAGS): added -fno-builtin.
+
 	* bforce/nodelist.c (nodelist_checkheader): small fixes.
 
 2005-01-10  Evgeniy Kozhuhovskiy  <e.kozhuhovskiy@generation-p.com>
diff --git a/source/Makefile.in b/source/Makefile.in
index 6a97aee..80abc26 100644
--- a/source/Makefile.in
+++ b/source/Makefile.in
@@ -8,7 +8,7 @@
 
 CC 		= @CC@
 INCLUDES	= -I./include
-CFLAGS		= @CFLAGS@
+CFLAGS		= @CFLAGS@ -fno-builtin
 LIBS 		= @LIBS@
 YACC		= @YACC@
 INSTALL		= @INSTALL@