diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index ea6704f027e3c84166470812d3d8d9cc28da70c2..752d3e97e077a34eb4a7a68bb8f9355915c5c02e 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -165,7 +165,7 @@ $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF)
 		-I$(srctree)/tools/include/uapi/ \
 		-I$(LIBBPF_PATH) \
 		-I$(srctree)/tools/lib \
-		-g -O2 -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
+		-g -O2 -Wall -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
 
 $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
 	$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@