diff --git a/build.rs b/build.rs
index 2b17e0be9..dd8d4e0f7 100644
--- a/build.rs
+++ b/build.rs
@@ -33,7 +33,10 @@ fn target_has_atomic_cas(target: &str) -> bool {
 
 fn target_has_atomics(target: &str) -> bool {
     match &target[..] {
-        "msp430-none-elf" | "riscv32i-unknown-none-elf" | "riscv32imc-unknown-none-elf" => false,
+        "thumbv4t-none-eabi"
+        | "msp430-none-elf"
+        | "riscv32i-unknown-none-elf"
+        | "riscv32imc-unknown-none-elf" => false,
         _ => true,
     }
 }