diff --git a/.changeset/sour-bananas-rule.md b/.changeset/sour-bananas-rule.md
new file mode 100644
index 000000000000..7e8af13d68e4
--- /dev/null
+++ b/.changeset/sour-bananas-rule.md
@@ -0,0 +1,7 @@
+---
+'astro': patch
+---
+
+Fixes an issue where an injected route entrypoint wasn't correctly marked because the resolved file path contained a query parameter.
+
+This fixes some edge case where some injected entrypoint were not resolved when using an adapter.
diff --git a/packages/astro/src/core/util.ts b/packages/astro/src/core/util.ts
index f0447529a91a..dd663de83952 100644
--- a/packages/astro/src/core/util.ts
+++ b/packages/astro/src/core/util.ts
@@ -115,7 +115,11 @@ function isInPagesDir(file: URL, config: AstroConfig): boolean {
 function isInjectedRoute(file: URL, settings: AstroSettings) {
 	let fileURL = file.toString();
 	for (const route of settings.resolvedInjectedRoutes) {
-		if (route.resolvedEntryPoint && fileURL === route.resolvedEntryPoint.toString()) return true;
+		if (
+			route.resolvedEntryPoint &&
+			removeQueryString(fileURL) === removeQueryString(route.resolvedEntryPoint.toString())
+		)
+			return true;
 	}
 	return false;
 }