diff --git a/lib/chkconfig.ltx b/lib/chkconfig.ltx
index 307f7d05bc..4ac60a6519 100644
--- a/lib/chkconfig.ltx
+++ b/lib/chkconfig.ltx
@@ -237,6 +237,7 @@
 \TestPackage{listings}
 \TestPackage{longtable}
 \TestPackage{natbib}
+\TestPackage{nicefrac} 
 \TestPackage{nomencl}
 \TestPackage{pdfcolmk}
 \TestPackage{prettyref}
@@ -246,6 +247,7 @@
 \TestPackage{soul}
 \TestPackage{subfigure}
 \TestPackage{textcomp}
+\TestPackage{units} 
 \TestPackage{url}
 \TestPackage{varioref}
 \TestPackage{wrapfig}
diff --git a/lib/doc/LaTeXConfig.lyx.in b/lib/doc/LaTeXConfig.lyx.in
index d19d0a2cc8..5a70fe5fa9 100644
--- a/lib/doc/LaTeXConfig.lyx.in
+++ b/lib/doc/LaTeXConfig.lyx.in
@@ -1,4 +1,4 @@
-#LyX 1.5.4svn created this file. For more info see http://www.lyx.org/
+#LyX 1.5.5svn created this file. For more info see http://www.lyx.org/
 \lyxformat 276
 \begin_document
 \begin_header
@@ -3000,6 +3000,28 @@ jurabib
  instead).
 \end_layout
 
+\begin_layout Subsection
+nicefrac
+\end_layout
+
+\begin_layout Description
+Found: @chk_nicefrac@
+\end_layout
+
+\begin_layout Description
+CTAN: 
+\family typewriter
+macros/latex/contrib/units/
+\end_layout
+
+\begin_layout Description
+Notes: The package 
+\family sans
+nicefrac
+\family default
+ is needed by LyX to create fractions in text size (like ``3/5'').
+\end_layout
+
 \begin_layout Subsection
 nomencl
 \end_layout
@@ -3172,7 +3194,24 @@ soul
  provides hyphenatable letterspacing (spacing out), underlining, striking
  out, and some derivatives.
  It is needed by LyX to output struck out text in change tracked documents.
- 
+\end_layout
+
+\begin_layout Subsection
+units
+\end_layout
+
+\begin_layout Description
+Found: @chk_units@
+\end_layout
+
+\begin_layout Description
+CTAN: 
+\family typewriter
+macros/latex/contrib/units/
+\end_layout
+
+\begin_layout Description
+Notes: The package units is needed by LyX to properly typeset units in formulas.
 \end_layout
 
 \begin_layout Subsection
diff --git a/status.15x b/status.15x
index 2c6e4166d7..6b460f7f01 100644
--- a/status.15x
+++ b/status.15x
@@ -55,6 +55,8 @@ What's new
 - Fix reversion of OHM and ANGSTROM characters to LyX < 1.5.0 (rest of
   bug 3313).
 
+- Check for the LaTeX packages "nicefrac" and "units" that are used by LyX.
+
 
 * USER INTERFACE: