diff --git a/audio/effect/2.0/INoiseSuppressionEffect.hal b/audio/effect/2.0/INoiseSuppressionEffect.hal
index ae2bfb5..6617a1e 100644
--- a/audio/effect/2.0/INoiseSuppressionEffect.hal
+++ b/audio/effect/2.0/INoiseSuppressionEffect.hal
@@ -26,12 +26,12 @@
         HIGH
     };
 
-    /*
+    /**
      * Sets suppression level.
      */
     setSuppressionLevel(Level level) generates (Result retval);
 
-    /*
+    /**
      * Gets suppression level.
      */
     getSuppressionLevel() generates (Result retval, Level level);
@@ -41,12 +41,12 @@
         MULTI_CHANNEL
     };
 
-    /*
+    /**
      * Set suppression type.
      */
     setSuppressionType(Type type) generates (Result retval);
 
-    /*
+    /**
      * Get suppression type.
      */
     getSuppressionType() generates (Result retval, Type type);
@@ -56,12 +56,12 @@
         Type type;
     };
 
-    /*
+    /**
      * Sets all properties at once.
      */
     setAllProperties(AllProperties properties) generates (Result retval);
 
-    /*
+    /**
      * Gets all properties at once.
      */
     getAllProperties() generates (Result retval, AllProperties properties);