diff --git a/Aircraft/c172p/Systems/instrumentation.xml b/Aircraft/c172p/Systems/instrumentation.xml
index b370e37b1..91c2563fe 100644
--- a/Aircraft/c172p/Systems/instrumentation.xml
+++ b/Aircraft/c172p/Systems/instrumentation.xml
@@ -144,6 +144,16 @@ file, these values will be used (they are hardcoded).
     </deviation>
   </magnetic-compass>
 
+  <comm-radio>
+    <name>comm</name>
+    <number>0</number>
+  </comm-radio>
+
+  <comm-radio>
+    <name>comm</name>
+    <number>1</number>
+  </comm-radio>
+
   <nav-radio>
     <name>nav</name>
     <number>0</number>