diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index 589ee7f76fe5..a169318bb4e7 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -38,6 +38,9 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20180721: move of libmlx5.so.1 and libibverbs.so.1
+OLD_LIBS+=usr/lib/libmlx5.so.1
+OLD_LIBS+=usr/lib/libibverbs.so.1
 # 20180710: old numa cleanup
 OLD_FILES+=usr/include/sys/numa.h
 OLD_FILES+=usr/share/man/man2/numa_getaffinity.2.gz
diff --git a/lib/ofed/libibverbs/Makefile b/lib/ofed/libibverbs/Makefile
index eb50be2f4ff5..bf41ddfb6a36 100644
--- a/lib/ofed/libibverbs/Makefile
+++ b/lib/ofed/libibverbs/Makefile
@@ -5,7 +5,7 @@ _spath=	${SRCTOP}/contrib/ofed/libibverbs
 
 LIB=		ibverbs
 SHLIB_MAJOR=	1
-SHLIBDIR?=	/usr/lib
+SHLIBDIR?=	/lib
 MK_PROFILE=	no
 VERSION_MAP=	${_spath}/libibverbs.map
 
diff --git a/lib/ofed/libmlx5/Makefile b/lib/ofed/libmlx5/Makefile
index 5d31f1428ca3..8cae554f47f2 100644
--- a/lib/ofed/libmlx5/Makefile
+++ b/lib/ofed/libmlx5/Makefile
@@ -3,7 +3,7 @@
 _spath=	${SRCTOP}/contrib/ofed/libmlx5
 .PATH: ${_spath}
 
-SHLIBDIR?=	/usr/lib
+SHLIBDIR?=	/lib
 LIB=		mlx5
 SHLIB_MAJOR=	1
 MK_PROFILE=	no