diff --git a/tests/components/remote_transmitter/common-nec.yaml b/tests/components/remote_transmitter/common-nec.yaml
index 8be3750c49..a4ad98b00e 100644
--- a/tests/components/remote_transmitter/common-nec.yaml
+++ b/tests/components/remote_transmitter/common-nec.yaml
@@ -1,3 +1,3 @@
 substitutions:
-  nec_address: 0x4242
-  nec_command: 0x8484
+  nec_address: "0x4242"
+  nec_command: "0x8484"