diff --git a/fuzzers/wcet_qemu_sys/Cargo.toml b/fuzzers/wcet_qemu_sys/Cargo.toml
index 1f69ba6957..da6876e87e 100644
--- a/fuzzers/wcet_qemu_sys/Cargo.toml
+++ b/fuzzers/wcet_qemu_sys/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2021"
 [features]
 default = ["std"]
 std = []
+multicore = []
 
 [profile.release]
 debug = true