diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index fa7443f45..8d1a05752 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -9,6 +9,13 @@ This file contains a high-level description of this package's evolution. Release
 
 ### 4.3.3-rc2 Released TBD
 
+* Fixed the code for handling character constants
+  in datalists in ncgen. Two of the problems were:
+  1. It failed on large constants
+  2. It did not handle e.g. var = 'a', 'b', ...
+     in the same way that ncgen3 did.
+  See [NCF-309](https://bugtracking.unidata.ucar.edu/browse/NCF-309).
+
 * Added a new file, `netcdf_meta.h`.  This file is generated automatically at configure time and contains information related to the capabilities of the netcdf library.  This file may be used by projects dependent upon `netcdf` to make decisions during configuration, based on how the `netcdf` library was built.  The macro `NC_HAVE_META_H` is defined in `netcdf.h`.  Paired with judicious use of `#ifdef`'s, this macro will indicate to developers whether or not the meta-header file is present. See [NCF-313](https://bugtracking.unidata.ucar.edu/browse/NCF-313).
 
     > Determining the presence of `netcdf_meta.h` can also be accomplished by methods common to autotools and cmake-based build systems.