diff --git a/test/subgraph-size.c b/test/subgraph-size.c
index 1dcbdb50176..0cffe7d11ed 100644
--- a/test/subgraph-size.c
+++ b/test/subgraph-size.c
@@ -71,9 +71,6 @@ int main(int argc, char** argv) {
     case 7:
       xnn_define_binary(NULL, xnn_binary_add, NULL, 0, 0, 0, 0);
       break;
-    case 9:
-      xnn_define_prelu(NULL, 0, 0, 0, 0);
-      break;
     case 10:
       xnn_define_clamp(NULL, 0.0f, 0.0f, 0, 0, 0);
       break;