diff --git a/m4/sb_luajit.m4 b/m4/sb_luajit.m4
index 71e251e..66f24b7 100644
--- a/m4/sb_luajit.m4
+++ b/m4/sb_luajit.m4
@@ -61,7 +61,7 @@ AS_CASE([$host_os:$host_cpu],
             LUAJIT_LIBS="$LUAJIT_LIBS -ldl"
             LUAJIT_LDFLAGS="-rdynamic"
           ],
-        # -rdynamic are required on FreeBSD
+        # -rdynamic is required on FreeBSD
         [*freebsd*:*],
           [
             LUAJIT_LDFLAGS="-rdynamic"