diff --git a/books/bookvol10.2.pamphlet b/books/bookvol10.2.pamphlet
index 64fc7af..d6d1a66 100644
--- a/books/bookvol10.2.pamphlet
+++ b/books/bookvol10.2.pamphlet
@@ -13041,7 +13041,7 @@ MatrixCategory(R,Row,Col): Category == Definition where
          ans
 
      if R has Field then
-       x / r == map(#1 / r,x)
+       x / r == map((r1:R):R +-> r1 / r,x)
 
        x:% ** n:Integer ==
          not((nn:= nrows x) = ncols x) => error "**: matrix must be square"
diff --git a/changelog b/changelog
index 53ad185..ec6d507 100644
--- a/changelog
+++ b/changelog
@@ -1,3 +1,5 @@
+20090509 tpd src/axiom-website/patches.html 20090509.05.tpd.patch
+20090509 tpd books/bookvol10.2 MATCAT +-> conversion (missed one)
 20090509 tpd src/axiom-website/patches.html 20090509.04.tpd.patch
 20090509 tpd books/bookvol10.2 MATCAT +-> conversion
 20090509 tpd src/axiom-website/patches.html 20090509.03.tpd.patch
diff --git a/src/axiom-website/patches.html b/src/axiom-website/patches.html
index d480a87..120d9e9 100644
--- a/src/axiom-website/patches.html
+++ b/src/axiom-website/patches.html
@@ -1140,5 +1140,7 @@ bookvol10.3 BFUNCT +-> conversion<br/>
 bookvol10.4 INTALG +-> conversion<br/>
 <a href="patches/20090509.04.tpd.patch">20090509.04.tpd.patch</a>
 bookvol10.2 MATCAT +-> conversion<br/>
+<a href="patches/20090509.04.tpd.patch">20090509.04.tpd.patch</a>
+bookvol10.2 MATCAT +-> conversion (missed one)<br/>
  </body>
 </html>