diff --git a/Chap_API_Sharing_Basics.tex b/Chap_API_Sharing_Basics.tex
index d58980e..a359ab2 100644
--- a/Chap_API_Sharing_Basics.tex
+++ b/Chap_API_Sharing_Basics.tex
@@ -429,14 +429,14 @@ \section{\code{PMIx_Get}}
 
 \copySignature{PMIx_Get}{1.0}{
 pmix_status_t \\
-PMIx_Get(const pmix_proc_t *proc, const pmix_key_t key, \\
+PMIx_Get(const pmix_proc_t *proc, const char key[], \\
 \hspace*{9\sigspace}const pmix_info_t info[], size_t ninfo, \\
 \hspace*{9\sigspace}pmix_value_t **val);
 }
 
 \begin{arglist}
 \argin{proc}{Process identifier - a \code{NULL} value may be used in place of the caller's ID (handle)}
-\argin{key}{Key to retrieve (\refstruct{pmix_key_t})}
+\argin{key}{Key to retrieve (string)}
 \argin{info}{Array of info structures (array of handles)}
 \argin{ninfo}{Number of elements in the \refarg{info} array (integer)}
 \argout{val}{value (handle)}
diff --git a/Chap_Revisions.tex b/Chap_Revisions.tex
index b3986a4..3b63771 100644
--- a/Chap_Revisions.tex
+++ b/Chap_Revisions.tex
@@ -1463,9 +1463,18 @@ \section{Version 5.1: TBD}
 The v5.1 update includes the following changes from the v5.0 document:
 
 \begin{compactitemize}
+  \item Revision history now contains a list of errata changes
   \item Add that using \refapi{PMIx_Info_load} with a \code{NULL} \refconst{PMIX_BOOL} data sets the value to true
 \end{compactitemize}
 
+\subsection{Errata}
+
+The following errors were corrected in v5.1:
+
+\begin{compactitemize}
+  \item Parameter type for the key argument in \refapi{PMIx_Get} has been changed from \refstruct{pmix_key_t} to \code{char []} so that it is uniform with the argument in \refapi{PMIx_Get_nb}.
+\end{compactitemize}
+
 \subsection{Added Functions (Provisional)}
 
 %\begin{compactitemize}