diff --git a/lib/libspl/Makefile.am b/lib/libspl/Makefile.am
index ee47ce9607..ad91ae851e 100644
--- a/lib/libspl/Makefile.am
+++ b/lib/libspl/Makefile.am
@@ -13,6 +13,8 @@ AM_CCASFLAGS = \
 
 lib_LTLIBRARIES = libspl.la
 
+libspl_la_LDFLAGS = -lrt
+
 libspl_la_SOURCES = \
 	${top_srcdir}/lib/libspl/getexecname.c \
 	${top_srcdir}/lib/libspl/gethrtime.c \