diff --git a/tgt-null/Makefile.in b/tgt-null/Makefile.in
index 5cb577068..7b0cf6b75 100644
--- a/tgt-null/Makefile.in
+++ b/tgt-null/Makefile.in
@@ -36,7 +36,7 @@ INSTALL = @INSTALL@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_DATA = @INSTALL_DATA@
 
-CPPFLAGS = @ident_support@ -I.. -I$(srcdir)/.. -I$(srcdir) -DVERSION='"$(VERSION)"' @CPPFLAGS@ @DEFS@ @PICFLAG@
+CPPFLAGS = -I.. -I$(srcdir)/.. -I$(srcdir) -DVERSION='"$(VERSION)"' @CPPFLAGS@ @DEFS@ @PICFLAG@
 CFLAGS = -Wall @CFLAGS@
 LDFLAGS = @LDFLAGS@