diff --git a/src/channels/plugins/normalize/signal.test.ts b/src/channels/plugins/normalize/signal.test.ts
index 29a8c5d42b6..547a8f30d91 100644
--- a/src/channels/plugins/normalize/signal.test.ts
+++ b/src/channels/plugins/normalize/signal.test.ts
@@ -14,6 +14,12 @@ describe("signal target normalization", () => {
     );
   });
 
+  it("preserves case for group targets", () => {
+    expect(
+      normalizeSignalMessagingTarget("signal:group:VWATOdKF2hc8zdOS76q9tb0+5BI522e03QLDAq/9yPg="),
+    ).toBe("group:VWATOdKF2hc8zdOS76q9tb0+5BI522e03QLDAq/9yPg=");
+  });
+
   it("accepts uuid prefixes for target detection", () => {
     expect(looksLikeSignalTargetId("uuid:123e4567-e89b-12d3-a456-426614174000")).toBe(true);
     expect(looksLikeSignalTargetId("signal:uuid:123e4567-e89b-12d3-a456-426614174000")).toBe(true);