diff --git a/gnu/usr.bin/binutils/gdb/Makefile b/gnu/usr.bin/binutils/gdb/Makefile
index 5f134e28c10c..4c986410004c 100644
--- a/gnu/usr.bin/binutils/gdb/Makefile
+++ b/gnu/usr.bin/binutils/gdb/Makefile
@@ -40,7 +40,7 @@ m2-exp.tab.c: $(.CURDIR)/m2-exp.y
 
 
 
-CFLAGS+= -I$(.CURDIR)/. -I/usr/include/readline -I$(.CURDIR)/../bfd
+CFLAGS+= -I$(.CURDIR)/. -I${DESTDIR}/usr/include/readline -I$(.CURDIR)/../bfd
 DPADD+= ${LIBREADLINE} ${LIBTERMCAP}
 LDADD+= -lreadline  -ltermcap
 
diff --git a/gnu/usr.bin/gdb/gdb/Makefile b/gnu/usr.bin/gdb/gdb/Makefile
index 5f134e28c10c..4c986410004c 100644
--- a/gnu/usr.bin/gdb/gdb/Makefile
+++ b/gnu/usr.bin/gdb/gdb/Makefile
@@ -40,7 +40,7 @@ m2-exp.tab.c: $(.CURDIR)/m2-exp.y
 
 
 
-CFLAGS+= -I$(.CURDIR)/. -I/usr/include/readline -I$(.CURDIR)/../bfd
+CFLAGS+= -I$(.CURDIR)/. -I${DESTDIR}/usr/include/readline -I$(.CURDIR)/../bfd
 DPADD+= ${LIBREADLINE} ${LIBTERMCAP}
 LDADD+= -lreadline  -ltermcap