diff --git a/flap/runtime/runtime.c b/flap/runtime/runtime.c
index 78d8654..5e6adf5 100644
--- a/flap/runtime/runtime.c
+++ b/flap/runtime/runtime.c
@@ -35,8 +35,3 @@ int64_t write_block(intptr_t *block, int64_t n, intptr_t v) {
   block[n] = v;
   return 0;
 }
-
-void add_eight_int(int64_t x1, int64_t x2, int64_t x3, int64_t x4, int64_t x5,
-                   int64_t x6, int64_t x7, int64_t x8) {
-  return observe_int(x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8);
-}