diff --git a/compatibility_matrices/compatibility_matrix.4.xml b/compatibility_matrices/compatibility_matrix.4.xml
index b9fb3f407f..204b83b96f 100644
--- a/compatibility_matrices/compatibility_matrix.4.xml
+++ b/compatibility_matrices/compatibility_matrix.4.xml
@@ -361,6 +361,7 @@
         <interface>
             <name>ISap</name>
             <instance>slot1</instance>
+            <instance>slot2</instance>
         </interface>
     </hal>
     <hal format="hidl" optional="true">
diff --git a/compatibility_matrices/compatibility_matrix.5.xml b/compatibility_matrices/compatibility_matrix.5.xml
index b374c8cfa3..bbf70558c2 100644
--- a/compatibility_matrices/compatibility_matrix.5.xml
+++ b/compatibility_matrices/compatibility_matrix.5.xml
@@ -399,6 +399,7 @@
         <interface>
             <name>ISap</name>
             <instance>slot1</instance>
+            <instance>slot2</instance>
         </interface>
     </hal>
     <hal format="hidl" optional="true">
diff --git a/compatibility_matrices/compatibility_matrix.6.xml b/compatibility_matrices/compatibility_matrix.6.xml
index 40ae6558e8..1b812eded1 100644
--- a/compatibility_matrices/compatibility_matrix.6.xml
+++ b/compatibility_matrices/compatibility_matrix.6.xml
@@ -454,6 +454,7 @@
         <interface>
             <name>ISap</name>
             <instance>slot1</instance>
+            <instance>slot2</instance>
         </interface>
     </hal>
     <hal format="hidl" optional="true">
diff --git a/compatibility_matrices/compatibility_matrix.7.xml b/compatibility_matrices/compatibility_matrix.7.xml
index e5ef954255..441979626c 100644
--- a/compatibility_matrices/compatibility_matrix.7.xml
+++ b/compatibility_matrices/compatibility_matrix.7.xml
@@ -582,6 +582,7 @@
         <interface>
             <name>ISap</name>
             <instance>slot1</instance>
+            <instance>slot2</instance>
         </interface>
     </hal>
     <hal format="hidl" optional="true">