diff --git a/crates/console/prometeu-hal/src/syscalls/tests.rs b/crates/console/prometeu-hal/src/syscalls/tests.rs
index 9594c17b..3129d813 100644
--- a/crates/console/prometeu-hal/src/syscalls/tests.rs
+++ b/crates/console/prometeu-hal/src/syscalls/tests.rs
@@ -63,6 +63,18 @@ fn resolver_rejects_unknown_identity() {
     }
 }
 
+#[test]
+fn resolver_rejects_removed_legacy_gfx_set_sprite_identity() {
+    assert!(resolve_syscall("gfx", "set_sprite", 1).is_none());
+
+    let requested = [SyscallIdentity { module: "gfx", name: "set_sprite", version: 1 }];
+    let err = resolve_program_syscalls(&requested, caps::ALL).unwrap_err();
+    assert_eq!(
+        err,
+        LoadError::UnknownSyscall { module: "gfx".into(), name: "set_sprite".into(), version: 1 }
+    );
+}
+
 #[test]
 fn resolver_enforces_capabilities() {
     let requested = [SyscallIdentity { module: "gfx", name: "clear", version: 1 }];
diff --git a/crates/tools/pbxgen-stress/src/lib.rs b/crates/tools/pbxgen-stress/src/lib.rs
index 79a42dfc..d8137e23 100644
--- a/crates/tools/pbxgen-stress/src/lib.rs
+++ b/crates/tools/pbxgen-stress/src/lib.rs
@@ -42,10 +42,10 @@ pub fn generate() -> Result<()> {
             ret_slots: 0,
         },
         SyscallDecl {
-            module: "gfx".into(),
-            name: "set_sprite".into(),
+            module: "composer".into(),
+            name: "emit_sprite".into(),
             version: 1,
-            arg_slots: 10,
+            arg_slots: 9,
             ret_slots: 1,
         },
     ];
@@ -124,9 +124,9 @@ fn heavy_load(rom: &mut Vec<u8>) {
 
     // --- clear screen ---
     rom.extend(asm("PUSH_I32 0\nHOSTCALL 0"));
-    // --- call status-first syscall path once per frame and drop status ---
+    // --- call composer-domain sprite emission path once per frame and drop status ---
     rom.extend(asm(
-        "PUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_BOOL 0\nPUSH_BOOL 0\nPUSH_BOOL 0\nPUSH_I32 0\nHOSTCALL 4\nPOP_N 1",
+        "PUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_I32 0\nPUSH_BOOL 0\nPUSH_BOOL 0\nPUSH_I32 0\nHOSTCALL 4\nPOP_N 1",
     ));
 
     // --- draw 500 discs ---
diff --git a/test-cartridges/stress-console/program.pbx b/test-cartridges/stress-console/program.pbx
index 83b01e19..033fc6c9 100644
Binary files a/test-cartridges/stress-console/program.pbx and b/test-cartridges/stress-console/program.pbx differ