diff --git a/eclass/rust-toolchain.eclass b/eclass/rust-toolchain.eclass
index 6ad5c811f6c07..89bca88b9e6bc 100644
--- a/eclass/rust-toolchain.eclass
+++ b/eclass/rust-toolchain.eclass
@@ -51,6 +51,7 @@ rust_abi() {
 		riscv64*gnu)      echo riscv64gc-unknown-linux-gnu;;
 		riscv64*musl)     echo riscv64gc-unknown-linux-musl;;
 		s390x*)           echo s390x-unknown-linux-gnu;;
+		sparc64*gnu)      echo sparc64-unknown-linux-gnu;;
 		x86_64*gnu)       echo x86_64-unknown-linux-gnu;;
 		x86_64*musl)      echo x86_64-unknown-linux-musl;;
 		*)                echo ${CTARGET};;