diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 98b3fca..a20d15d 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -461,7 +461,7 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.radio.data</name>
-        <version>2</version>
+        <version>1</version>
         <interface>
             <name>IRadioData</name>
             <instance>slot1</instance>