diff --git a/backend-simulators/pim/pim-simulator/src/lib/json_to_instruction/json_isa.rs b/backend-simulators/pim/pim-simulator/src/lib/json_to_instruction/json_isa.rs
index e7b9cba..e34b235 100644
--- a/backend-simulators/pim/pim-simulator/src/lib/json_to_instruction/json_isa.rs
+++ b/backend-simulators/pim/pim-simulator/src/lib/json_to_instruction/json_isa.rs
@@ -71,7 +71,8 @@ pub fn json_to_instruction(
         inst_builder,
         inst_data_builder,
         json,
-    );
+    )
+    .unwrap();
 }
 
 macro_rules! json_str {