diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index b4fa0e69aa14f943239860d9124be78eefb48f11..342a41a10356114466220a69616a2a3dc18ea087 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -219,6 +219,7 @@ TPROGLDLIBS_xdp_redirect	+= -lm
 TPROGLDLIBS_xdp_redirect_cpu	+= -lm
 TPROGLDLIBS_xdp_redirect_map	+= -lm
 TPROGLDLIBS_xdp_redirect_map_multi += -lm
+TPROGLDLIBS_xdp_router_ipv4	+= -lm
 TPROGLDLIBS_tracex4		+= -lrt
 TPROGLDLIBS_trace_output	+= -lrt
 TPROGLDLIBS_map_perf_test	+= -lrt