diff --git a/src/bpf.h b/src/bpf.h
index 1441f64..f866e98 100644
--- a/src/bpf.h
+++ b/src/bpf.h
@@ -35,7 +35,7 @@
 extern "C" {
 #endif
 
-int libbpf_set_memlock_rlim(size_t memlock_bytes);
+LIBBPF_API int libbpf_set_memlock_rlim(size_t memlock_bytes);
 
 struct bpf_map_create_opts {
 	size_t sz; /* size of this struct for forward/backward compatibility */