diff --git a/.changeset/large-turkeys-deny.md b/.changeset/large-turkeys-deny.md
new file mode 100644
index 0000000000..6dcd227f7f
--- /dev/null
+++ b/.changeset/large-turkeys-deny.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+chore: improve readonly prop messaging
diff --git a/packages/svelte/src/internal/client/proxy/readonly.js b/packages/svelte/src/internal/client/proxy/readonly.js
index 3fce783397..abc2163d97 100644
--- a/packages/svelte/src/internal/client/proxy/readonly.js
+++ b/packages/svelte/src/internal/client/proxy/readonly.js
@@ -42,7 +42,7 @@ export function readonly(value) {
  */
 const readonly_error = (_, prop) => {
 	throw new Error(
-		`Non-bound props cannot be mutated — use \`bind:<prop>={...}\` to make \`${prop}\` settable. Fallback values can never be mutated.`
+		`Non-bound props cannot be mutated — to make the \`${prop}\` settable, ensure the object it is used within is bound as a prop \`bind:<prop>={...}\`. Fallback values can never be mutated.`
 	);
 };
 
diff --git a/packages/svelte/tests/runtime-runes/samples/proxy-prop-default-readonly/_config.js b/packages/svelte/tests/runtime-runes/samples/proxy-prop-default-readonly/_config.js
index 352d874648..d78db389d7 100644
--- a/packages/svelte/tests/runtime-runes/samples/proxy-prop-default-readonly/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/proxy-prop-default-readonly/_config.js
@@ -15,5 +15,5 @@ export default test({
 	},
 
 	runtime_error:
-		'Non-bound props cannot be mutated — use `bind:<prop>={...}` to make `count` settable. Fallback values can never be mutated.'
+		'Non-bound props cannot be mutated — to make the `count` settable, ensure the object it is used within is bound as a prop `bind:<prop>={...}`. Fallback values can never be mutated.'
 });
diff --git a/packages/svelte/tests/runtime-runes/samples/proxy-prop-readonly/_config.js b/packages/svelte/tests/runtime-runes/samples/proxy-prop-readonly/_config.js
index 352d874648..d78db389d7 100644
--- a/packages/svelte/tests/runtime-runes/samples/proxy-prop-readonly/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/proxy-prop-readonly/_config.js
@@ -15,5 +15,5 @@ export default test({
 	},
 
 	runtime_error:
-		'Non-bound props cannot be mutated — use `bind:<prop>={...}` to make `count` settable. Fallback values can never be mutated.'
+		'Non-bound props cannot be mutated — to make the `count` settable, ensure the object it is used within is bound as a prop `bind:<prop>={...}`. Fallback values can never be mutated.'
 });