diff --git a/.changeset/strong-coins-peel.md b/.changeset/strong-coins-peel.md
new file mode 100644
index 0000000000..013e8e44a1
--- /dev/null
+++ b/.changeset/strong-coins-peel.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: improve error message for migration errors when slot would be renamed
diff --git a/packages/svelte/src/compiler/migrate/index.js b/packages/svelte/src/compiler/migrate/index.js
index 75a9a64905..2d5a4dcd9e 100644
--- a/packages/svelte/src/compiler/migrate/index.js
+++ b/packages/svelte/src/compiler/migrate/index.js
@@ -1307,7 +1307,7 @@ const template = {
 			name = state.scope.generate(slot_name);
 			if (name !== slot_name) {
 				throw new MigrationError(
-					'This migration would change the name of a slot making the component unusable'
+					`This migration would change the name of a slot (${slot_name} to ${name}) making the component unusable`
 				);
 			}
 		}
@@ -1880,7 +1880,7 @@ function handle_identifier(node, state, path) {
 				let new_name = state.scope.generate(name);
 				if (new_name !== name) {
 					throw new MigrationError(
-						'This migration would change the name of a slot making the component unusable'
+						`This migration would change the name of a slot (${name} to ${new_name}) making the component unusable`
 					);
 				}
 			}
diff --git a/packages/svelte/tests/migrate/samples/impossible-migrate-$derived-derived-var-3/output.svelte b/packages/svelte/tests/migrate/samples/impossible-migrate-$derived-derived-var-3/output.svelte
index 9e4f086aed..26012e1115 100644
--- a/packages/svelte/tests/migrate/samples/impossible-migrate-$derived-derived-var-3/output.svelte
+++ b/packages/svelte/tests/migrate/samples/impossible-migrate-$derived-derived-var-3/output.svelte
@@ -1,7 +1,7 @@
-<!-- @migration-task Error while migrating Svelte code: This migration would change the name of a slot making the component unusable -->
+<!-- @migration-task Error while migrating Svelte code: This migration would change the name of a slot (derived to derived_1) making the component unusable -->
 <script>
 	let derived;
 </script>
 <Component>
 	<slot name="derived" slot="derived" />
-</Component>
\ No newline at end of file
+</Component>
diff --git a/packages/svelte/tests/migrate/samples/impossible-migrate-slot-change-name/output.svelte b/packages/svelte/tests/migrate/samples/impossible-migrate-slot-change-name/output.svelte
index 2b6838a1d6..328966b63b 100644
--- a/packages/svelte/tests/migrate/samples/impossible-migrate-slot-change-name/output.svelte
+++ b/packages/svelte/tests/migrate/samples/impossible-migrate-slot-change-name/output.svelte
@@ -1,6 +1,6 @@
-<!-- @migration-task Error while migrating Svelte code: This migration would change the name of a slot making the component unusable -->
+<!-- @migration-task Error while migrating Svelte code: This migration would change the name of a slot (body to body_1) making the component unusable -->
 <script>
 	let body;
 </script>
 
-<slot name="body"></slot>
\ No newline at end of file
+<slot name="body"></slot>
diff --git a/packages/svelte/tests/migrate/samples/impossible-migrate-slot-non-identifier/output.svelte b/packages/svelte/tests/migrate/samples/impossible-migrate-slot-non-identifier/output.svelte
index 6e5ab10310..1e763577df 100644
--- a/packages/svelte/tests/migrate/samples/impossible-migrate-slot-non-identifier/output.svelte
+++ b/packages/svelte/tests/migrate/samples/impossible-migrate-slot-non-identifier/output.svelte
@@ -1,2 +1,2 @@
-<!-- @migration-task Error while migrating Svelte code: This migration would change the name of a slot making the component unusable -->
-<slot name="dashed-name"></slot>
\ No newline at end of file
+<!-- @migration-task Error while migrating Svelte code: This migration would change the name of a slot (dashed-name to dashed_name) making the component unusable -->
+<slot name="dashed-name"></slot>