diff --git a/version.sh b/version.sh
index 477f3fed8b..eb302c9134 100755
--- a/version.sh
+++ b/version.sh
@@ -2,7 +2,10 @@
 
 test "$1" && extra="-$1"
 
-svn_revision=$(LC_ALL=C svn info 2> /dev/null | grep Revision | cut -d' ' -f2)
+# Extract revision number from file used by daily tarball snapshots
+# or from the places different Subversion versions have it.
+svn_revision=$(cat snapshot_version 2> /dev/null)
+test $svn_revision || svn_revision=$(LC_ALL=C svn info 2> /dev/null | grep Revision | cut -d' ' -f2)
 test $svn_revision || svn_revision=$(grep revision .svn/entries 2>/dev/null | cut -d '"' -f2)
 test $svn_revision || svn_revision=$(sed -n -e '/^dir$/{n;p;q;}' .svn/entries 2>/dev/null)
 test $svn_revision || svn_revision=UNKNOWN