diff --git a/bpf/aya-bpf/src/lib.rs b/bpf/aya-bpf/src/lib.rs
index 57e0e372..32d47e35 100644
--- a/bpf/aya-bpf/src/lib.rs
+++ b/bpf/aya-bpf/src/lib.rs
@@ -57,11 +57,12 @@ pub trait BpfContext {
 }
 
 #[no_mangle]
-pub unsafe extern "C" fn memset(s: *mut u8, c: c_int, n: usize) {
+pub unsafe extern "C" fn memset(s: *mut u8, c: c_int, n: usize) -> u8 {
     let base = s as usize;
     for i in 0..n {
         *((base + i) as *mut u8) = c as u8;
     }
+    0
 }
 
 #[no_mangle]