diff --git a/lib/libzpool/Makefile.am b/lib/libzpool/Makefile.am
index 5e9d97b05d..744dbfce30 100644
--- a/lib/libzpool/Makefile.am
+++ b/lib/libzpool/Makefile.am
@@ -153,3 +153,5 @@ libzpool_la_SOURCES = \
 	${top_srcdir}/module/zfs/include/sys/fm/protocol.h \
 	${top_srcdir}/module/zfs/include/sys/fm/util.h \
 	${top_srcdir}/module/zfs/include/sys/fm/fs/zfs.h
+
+libzpool_la_LDFLAGS = -pthread