diff --git a/src/sampleconf/mimemap b/src/sampleconf/mimemap
index 86653d90..10a5509e 100644
--- a/src/sampleconf/mimemap
+++ b/src/sampleconf/mimemap
@@ -68,8 +68,13 @@
 .tar.bz2 = application/x-tar
 
 .doc = application/msword
+.dot = application/msword
 .ppt = application/vnd.ms-powerpoint
+.pps = application/vnd.ms-powerpoint
+.pot = application/vnd.ms-powerpoint
 .xls = application/vnd.ms-excel
+.xla = application/vnd.ms-excel
+
 .chm = application/x-chm
 
 .epub = application/epub+zip
@@ -156,6 +161,7 @@
 # problem in practice.
 recoll_noindex = .md5 .map \
        .o .lib .dll .a .sys .exe .com \
+       .mpp .mpt .vsd \
        .dat .bak .rdf .log.gz .log .db .msf .pid \
        ,v ~ #