diff --git a/.changeset/poor-lies-report.md b/.changeset/poor-lies-report.md
new file mode 100644
index 0000000..48face7
--- /dev/null
+++ b/.changeset/poor-lies-report.md
@@ -0,0 +1,5 @@
+---
+'@chialab/plasma': patch
+---
+
+Fix event declarations in svelte.
diff --git a/src/svelte.ts b/src/svelte.ts
index 741e1da..4577a26 100644
--- a/src/svelte.ts
+++ b/src/svelte.ts
@@ -248,7 +248,7 @@ import { ${getAttributes(definition.extend ?? definition.name).split('<')[0]}, t
         .map((member) => `${member.name}?: Base${declaration.name}['${member.name}'];`)
         .concat(
             declaration.events?.map(
-                (declaration) => `on${declaration.name}?: EventHandler<CustomEvent, Base${declaration.name}>;`
+                (event) => `on${event.name}?: EventHandler<CustomEvent, Base${declaration.name}>;`
             ) ?? []
         );
 
diff --git a/test/src/svelte/TestElement.d.ts b/test/src/svelte/TestElement.d.ts
index 238e5c7..7684416 100644
--- a/test/src/svelte/TestElement.d.ts
+++ b/test/src/svelte/TestElement.d.ts
@@ -9,7 +9,7 @@ declare const __propDef: {
         numericProp?: BaseTestElement['numericProp'];
         objectProp?: BaseTestElement['objectProp'];
         defaultValue?: BaseTestElement['defaultValue'];
-        onstringchange?: EventHandler<CustomEvent, Basestringchange>;
+        onstringchange?: EventHandler<CustomEvent, BaseTestElement>;
     };
     events: {
         'stringchange': CustomEvent;
diff --git a/test/src/svelte/TestLink.d.ts b/test/src/svelte/TestLink.d.ts
index 6d5b0d8..6a11419 100644
--- a/test/src/svelte/TestLink.d.ts
+++ b/test/src/svelte/TestLink.d.ts
@@ -9,7 +9,7 @@ declare const __propDef: {
         numericProp?: BaseTestLink['numericProp'];
         objectProp?: BaseTestLink['objectProp'];
         defaultValue?: BaseTestLink['defaultValue'];
-        onstringchange?: EventHandler<CustomEvent, Basestringchange>;
+        onstringchange?: EventHandler<CustomEvent, BaseTestLink>;
     };
     events: {
         'stringchange': CustomEvent;