diff --git a/graphics/mapper/2.0/IMapper.hal b/graphics/mapper/2.0/IMapper.hal
index 4ee206b..4566135 100644
--- a/graphics/mapper/2.0/IMapper.hal
+++ b/graphics/mapper/2.0/IMapper.hal
@@ -155,7 +155,7 @@
      * @param cpuUsage specifies one or more CPU usage flags to request.
      * @param accessRegion is the portion of the buffer that the client
      *        intends to access.
-     * @param acquireFence, when non-empty, is a handle containing a file
+     * @param acquireFence when non-empty, is a handle containing a file
      *        descriptor referring to a sync fence object, which will be
      *        signaled when it is safe for the mapper to lock the buffer. If
      *        it is already safe to lock, acquireFence is empty.
@@ -191,7 +191,7 @@
      * @param cpuUsage specifies one or more CPU usage flags to request.
      * @param accessRegion is the portion of the buffer that the client
      *        intends to access.
-     * @param acquireFence, when non-empty, is a handle containing a file
+     * @param acquireFence when non-empty, is a handle containing a file
      *        descriptor referring to a sync fence object, which will be
      *        signaled when it is safe for the mapper to lock the buffer. If
      *        it is already safe to lock, acquireFence is empty.
diff --git a/graphics/mapper/2.0/types.hal b/graphics/mapper/2.0/types.hal
index e9b2f3a..2291f70 100644
--- a/graphics/mapper/2.0/types.hal
+++ b/graphics/mapper/2.0/types.hal
@@ -17,14 +17,14 @@
 package android.hardware.graphics.mapper@2.0;
 
 enum Error : int32_t {
-    NONE            = 0, /** no error */
-    BAD_DESCRIPTOR  = 1, /** invalid BufferDescriptor */
-    BAD_BUFFER      = 2, /** invalid buffer handle */
-    BAD_VALUE       = 3, /** invalid width, height, etc. */
+    NONE            = 0, /* no error */
+    BAD_DESCRIPTOR  = 1, /* invalid BufferDescriptor */
+    BAD_BUFFER      = 2, /* invalid buffer handle */
+    BAD_VALUE       = 3, /* invalid width, height, etc. */
     /* 4 is reserved */
-    NO_RESOURCES    = 5, /** temporary failure due to resource contention */
+    NO_RESOURCES    = 5, /* temporary failure due to resource contention */
     /* 6 is reserved */
-    UNSUPPORTED     = 7, /** permanent failure */
+    UNSUPPORTED     = 7, /* permanent failure */
 };
 
 /**