diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 50e04cc5dddd82e888a22621eb3959098dad6444..2de9c386989a739113bfe52c4dd468326a01273a 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -42,21 +42,15 @@
 # endif
 #endif
 
-static __u64 ptr_to_u64(const void *ptr)
+static inline __u64 ptr_to_u64(const void *ptr)
 {
 	return (__u64) (unsigned long) ptr;
 }
 
-static int sys_bpf(enum bpf_cmd cmd, union bpf_attr *attr,
-		   unsigned int size)
+static inline int sys_bpf(enum bpf_cmd cmd, union bpf_attr *attr,
+			  unsigned int size)
 {
-#ifdef __NR_bpf
 	return syscall(__NR_bpf, cmd, attr, size);
-#else
-	fprintf(stderr, "No bpf syscall, kernel headers too old?\n");
-	errno = ENOSYS;
-	return -1;
-#endif
 }
 
 int bpf_create_map(enum bpf_map_type map_type, int key_size,