diff --git a/compiler/rustc_target/src/spec/bpf_base.rs b/compiler/rustc_target/src/spec/bpf_base.rs
index 2b00cda44b5..4d03747d016 100644
--- a/compiler/rustc_target/src/spec/bpf_base.rs
+++ b/compiler/rustc_target/src/spec/bpf_base.rs
@@ -6,7 +6,7 @@ pub fn opts(endian: Endian) -> TargetOptions {
         allow_asm: true,
         endian,
         linker_flavor: LinkerFlavor::Bpf,
-        atomic_cas: true,
+        atomic_cas: false,
         dynamic_linking: true,
         no_builtins: true,
         panic_strategy: PanicStrategy::Abort,