diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 9c88f6e4156d6262273b0dc27fdf88af42d922e7..592a58a2b6810866b64f08eef118c624bca19c08 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: LGPL-2.1
+
 /*
  * common eBPF ELF operations.
  *
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 9f44c196931e437c08e8632da66e523c8a0ca507..8d18fb73d7fb2978e0ba44ffc58a5c814f1f09e8 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+
 /*
  * common eBPF ELF operations.
  *
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index c60122d3ea8570975f5705291b980205a4f425b1..71ddc481f349d4d2ec64638efd255688531b9501 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: LGPL-2.1
+
 /*
  * Common eBPF ELF object loading operations.
  *
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index e42f96900318f5d584720ecf7f24b37dfe7a5549..f85906533cddb09b6751dd4c8ce5b7d5f616523e 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+
 /*
  * Common eBPF ELF object loading operations.
  *