diff --git a/library/panic_unwind/src/gcc.rs b/library/panic_unwind/src/gcc.rs
index 1cfd527b584..6b88bab8277 100644
--- a/library/panic_unwind/src/gcc.rs
+++ b/library/panic_unwind/src/gcc.rs
@@ -114,7 +114,7 @@ const UNWIND_DATA_REG: (i32, i32) = (3, 4); // R3, R4 / X3, X4
 #[cfg(target_arch = "s390x")]
 const UNWIND_DATA_REG: (i32, i32) = (6, 7); // R6, R7
 
-#[cfg(target_arch = "sparc64")]
+#[cfg(any(target_arch = "sparc", target_arch = "sparc64"))]
 const UNWIND_DATA_REG: (i32, i32) = (24, 25); // I0, I1
 
 #[cfg(target_arch = "hexagon")]
diff --git a/library/unwind/src/libunwind.rs b/library/unwind/src/libunwind.rs
index dcf4fcd4e5a..806df572cf9 100644
--- a/library/unwind/src/libunwind.rs
+++ b/library/unwind/src/libunwind.rs
@@ -51,7 +51,7 @@ pub const unwinder_private_data_size: usize = 2;
 #[cfg(target_arch = "s390x")]
 pub const unwinder_private_data_size: usize = 2;
 
-#[cfg(target_arch = "sparc64")]
+#[cfg(any(target_arch = "sparc", target_arch = "sparc64"))]
 pub const unwinder_private_data_size: usize = 2;
 
 #[cfg(any(target_arch = "riscv64", target_arch = "riscv32"))]