diff --git a/tools/idl-gen/src/main.rs b/tools/idl-gen/src/main.rs
index 85bdc21..6e3f632 100644
--- a/tools/idl-gen/src/main.rs
+++ b/tools/idl-gen/src/main.rs
@@ -10,11 +10,13 @@ fn main() {
     };
 
     match spel_framework_core::idl_gen::generate_idl_from_file(&path) {
-        Ok(idl) => println!(
-            "{}",
-            serde_json::to_string_pretty(&idl)
-                .expect("serializing generated IDL to JSON should not fail")
-        ),
+        Ok(idl) => match serde_json::to_string_pretty(&idl) {
+            Ok(json) => println!("{json}"),
+            Err(e) => {
+                eprintln!("Error serializing IDL to JSON: {e}");
+                process::exit(1);
+            }
+        },
         Err(e) => {
             eprintln!("Error: {e}");
             process::exit(1);