diff --git a/src/backend/port/Makefile.in b/src/backend/port/Makefile.in
index 096d1f1a4c..8752512e5b 100644
--- a/src/backend/port/Makefile.in
+++ b/src/backend/port/Makefile.in
@@ -13,7 +13,7 @@
 # be converted to Method 2.  
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/src/backend/port/Attic/Makefile.in,v 1.9 1997/12/20 00:25:03 scrappy Exp $
+#    $Header: /cvsroot/pgsql/src/backend/port/Attic/Makefile.in,v 1.10 1997/12/20 04:10:35 scrappy Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -22,7 +22,7 @@ include ../../Makefile.global
 
 INCLUDE_OPT = -I..
 
-CFLAGS+= INCLUDE_OPT
+CFLAGS+= ${INCLUDE_OPT}
 
 OBJS = dynloader.o @INET_ATON@ @STRERROR@ @RANDOM@ @SRANDOM@
 OBJS+= @GETHOSTNAME@ @GETRUSAGE@ @STRCASECMP@ @STRDUP@