diff --git a/lib/libspl/include/Makefile.am b/lib/libspl/include/Makefile.am
index c1cbb0138..626a8f46b 100644
--- a/lib/libspl/include/Makefile.am
+++ b/lib/libspl/include/Makefile.am
@@ -7,6 +7,7 @@ libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/attr.h \
 	$(top_srcdir)/lib/libspl/include/devid.h \
 	$(top_srcdir)/lib/libspl/include/libdevinfo.h \
+	$(top_srcdir)/lib/libspl/include/libgen.h \
 	$(top_srcdir)/lib/libspl/include/libshare.h \
 	$(top_srcdir)/lib/libspl/include/limits.h \
 	$(top_srcdir)/lib/libspl/include/locale.h \
diff --git a/lib/libspl/include/Makefile.in b/lib/libspl/include/Makefile.in
index 5708683ff..ae9616f78 100644
--- a/lib/libspl/include/Makefile.in
+++ b/lib/libspl/include/Makefile.in
@@ -334,6 +334,7 @@ libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/attr.h \
 	$(top_srcdir)/lib/libspl/include/devid.h \
 	$(top_srcdir)/lib/libspl/include/libdevinfo.h \
+	$(top_srcdir)/lib/libspl/include/libgen.h \
 	$(top_srcdir)/lib/libspl/include/libshare.h \
 	$(top_srcdir)/lib/libspl/include/limits.h \
 	$(top_srcdir)/lib/libspl/include/locale.h \