diff --git a/WHATS_NEW_DM b/WHATS_NEW_DM
index 004b225d1..234989847 100644
--- a/WHATS_NEW_DM
+++ b/WHATS_NEW_DM
@@ -1,5 +1,6 @@
 Version 1.02.64 - 
 ===================================
+  Change dm_report_field_string() API to accept const char *const *data.
 
 Version 1.02.63 - 9th February 2011
 ===================================
diff --git a/libdm/libdevmapper.h b/libdm/libdevmapper.h
index 297b2c675..ac403e8b0 100644
--- a/libdm/libdevmapper.h
+++ b/libdm/libdevmapper.h
@@ -1123,7 +1123,7 @@ int dm_report_set_output_field_name_prefix(struct dm_report *rh,
  * They take care of allocating copies of the data.
  */
 int dm_report_field_string(struct dm_report *rh, struct dm_report_field *field,
-			   const char **data);
+			   const char *const *data);
 int dm_report_field_int32(struct dm_report *rh, struct dm_report_field *field,
 			  const int32_t *data);
 int dm_report_field_uint32(struct dm_report *rh, struct dm_report_field *field,
diff --git a/libdm/libdm-report.c b/libdm/libdm-report.c
index 4f47c46ea..021228414 100644
--- a/libdm/libdm-report.c
+++ b/libdm/libdm-report.c
@@ -102,7 +102,7 @@ static const struct dm_report_object_type *_find_type(struct dm_report *rh,
  */
 
 int dm_report_field_string(struct dm_report *rh,
-			   struct dm_report_field *field, const char **data)
+			   struct dm_report_field *field, const char *const *data)
 {
 	char *repstr;