1 files changed, 3 insertions, 3 deletions
diff --git a/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/Error.sys.mjs b/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/Error.sys.mjs
index b140d908da..c472f1a27d 100644
--- a/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/Error.sys.mjs
+++ b/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/Error.sys.mjs
@@ -46,7 +46,7 @@ export class {{ ffi_converter }} extends FfiConverterArrayBuffer {
                 {%- endif %}
             {%- endfor %}
             default:
-                throw new Error("Unknown {{ error.nm() }} variant");
+                throw new UniFFITypeError("Unknown {{ error.nm() }} variant");
         }
     }
     static computeSize(value) {
@@ -60,7 +60,7 @@ export class {{ ffi_converter }} extends FfiConverterArrayBuffer {
             return totalSize;
         }
         {%- endfor %}
-        throw new Error("Unknown {{ error.nm() }} variant");
+        throw new UniFFITypeError("Unknown {{ error.nm() }} variant");
     }
     static write(dataStream, value) {
         {%- for variant in error.variants() %}
@@ -72,7 +72,7 @@ export class {{ ffi_converter }} extends FfiConverterArrayBuffer {
             return;
         }
         {%- endfor %}
-        throw new Error("Unknown {{ error.nm() }} variant");
+        throw new UniFFITypeError("Unknown {{ error.nm() }} variant");
     }
 
     static errorClass = {{ error.nm() }};