diff --git a/.changeset/odd-donuts-impress.md b/.changeset/odd-donuts-impress.md
new file mode 100644
index 0000000000..7dd8d6b1b4
--- /dev/null
+++ b/.changeset/odd-donuts-impress.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fixes the path returned by `injectTypes`
diff --git a/packages/astro/src/integrations/hooks.ts b/packages/astro/src/integrations/hooks.ts
index c0b9604335..aa62572ee8 100644
--- a/packages/astro/src/integrations/hooks.ts
+++ b/packages/astro/src/integrations/hooks.ts
@@ -351,7 +351,9 @@ export async function runHookConfigDone({
 							content: injectedType.content,
 						});
 
-						return new URL(normalizedFilename, settings.config.root);
+						// It must be relative to dotAstroDir here and not inside normalizeInjectedTypeFilename
+						// because injectedTypes are handled relatively to the dotAstroDir already
+						return new URL(normalizedFilename, settings.dotAstroDir);
 					},
 					logger: getLogger(integration, logger),
 				}),