diff --git a/artiq/firmware/ksupport/eh_artiq.rs b/artiq/firmware/ksupport/eh_artiq.rs
index 68994af0a..190ee735f 100644
--- a/artiq/firmware/ksupport/eh_artiq.rs
+++ b/artiq/firmware/ksupport/eh_artiq.rs
@@ -388,29 +388,3 @@ pub extern "C-unwind" fn test_exception_id_sync(exn_id: u32) {
     };
     unsafe { raise(&exn) };
 }
-
-/// Takes as input exception id from host
-/// Generates a new exception with:
-///   * `id` set to `exn_id`
-///   * `message` set to corresponding exception name from `EXCEPTION_ID_LOOKUP`
-///
-/// The message is matched on host to ensure correct exception is being referred 
-/// This test checks the synchronization of exception ids for runtime errors
-#[no_mangle]
-pub extern "C-unwind" fn test_exception_id_sync(exn_id: u32) {
-    let message = EXCEPTION_ID_LOOKUP
-        .iter()
-        .find_map(|&(name, id)| if id == exn_id { Some(name) } else { None })
-        .unwrap_or("unallocated internal exception id");
-    
-    let exn = Exception {
-        id:       exn_id,
-        file:     file!().as_c_slice(),
-        line:     0,
-        column:   0,
-        function: "test_exception_id_sync".as_c_slice(),
-        message:  message.as_c_slice(),
-        param:    [0, 0, 0]
-    };
-    unsafe { raise(&exn) };
-}