diff --git a/libbpfgo.go b/libbpfgo.go
index f3108258..a5c77c57 100644
--- a/libbpfgo.go
+++ b/libbpfgo.go
@@ -716,7 +716,7 @@ func (b *BPFMap) GetValueFlags(key unsafe.Pointer, flags MapFlag) ([]byte, error
 // number of CPUs
 func (b *BPFMap) GetValueReadInto(key unsafe.Pointer, value *[]byte) error {
 	valuePtr := unsafe.Pointer(&(*value)[0])
-	errC := C.bpf_map_lookup_elem(b.fd, key, valuePtr)
+	errC := C.bpf_map__lookup_elem(b.bpfMap, key, C.ulong(b.KeySize()), valuePtr, C.ulong(len(*value)), 0)
 	if errC != 0 {
 		return fmt.Errorf("failed to lookup value %v in map %s: %w", key, b.name, syscall.Errno(-errC))
 	}