diff --git a/CHANGES b/CHANGES
index b7f9c9b29b6f156c24e47da20f12994d1e79be3f..40ee6b5d7da0e8fcb1860b5c1dea2e9efcf8dd3a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -24,7 +24,12 @@ dodgy pre-event code that was supposed to do the same thing (kind of).
 
 Updated to latest binary_grid and rob_misc perl modules.
 
-Updated API call to free_memory with a flag that allows one to
+API:
+
+New API call to binary_c_error_buffer so the error_buffer can be
+retrieved.
+
+Updated API call to binary_c_free_memory with a flag that allows one to
 not free the raw_buffer and error_buffer : useful for logging and
 the python interface (note that these have to be freed by the user).