diff --git a/README.md b/README.md
index 68c47f0..f1d0685 100644
--- a/README.md
+++ b/README.md
@@ -8,3 +8,7 @@ file.
 
 The only file needed for this is the snapaid.sh script.  The other files
 are used for generating the index.
+
+NOTE: Not all of the snapshots are in the database.  Some snapshot names,
+like 11.0-RC1, don't contain all the info others do, and are not
+included.  In the future, hopefully this will be fixed.
diff --git a/mksnapidx.awk b/mksnapidx.awk
index a88fb5a..a744954 100644
--- a/mksnapidx.awk
+++ b/mksnapidx.awk
@@ -86,5 +86,14 @@ $1 == "SHA512" {
 	} else
 		url = root parts[2] "/" fname
 
+	# if this part doesn't begin w/ r (for svn rev), skip it, we can't parse
+	# others for now
+	if (substr(parts[nextidx], 1, 1) != "r")
+		next
+
+	# double check that date is valid, if not, skip it
+	if (!isdate(date))
+		next
+
 	printf("%s %s %s %s %s %s %s %s %s %s\n", type, parts[2] "-" parts[3], arch, platform, date, parts[nextidx], vers, fname, url, MID)
 }