diff --git a/basis/soundex/summary.txt b/basis/soundex/summary.txt
deleted file mode 100644
index 95a271d911..0000000000
--- a/basis/soundex/summary.txt
+++ /dev/null
@@ -1 +0,0 @@
-Soundex is a phonetic algorithm for indexing names by sound
diff --git a/basis/soundex/author.txt b/extra/soundex/authors.txt
similarity index 100%
rename from basis/soundex/author.txt
rename to extra/soundex/authors.txt
diff --git a/basis/soundex/soundex-tests.factor b/extra/soundex/soundex-tests.factor
similarity index 100%
rename from basis/soundex/soundex-tests.factor
rename to extra/soundex/soundex-tests.factor
diff --git a/basis/soundex/soundex.factor b/extra/soundex/soundex.factor
similarity index 100%
rename from basis/soundex/soundex.factor
rename to extra/soundex/soundex.factor
diff --git a/extra/soundex/summary.txt b/extra/soundex/summary.txt
new file mode 100644
index 0000000000..3b6081280d
--- /dev/null
+++ b/extra/soundex/summary.txt
@@ -0,0 +1 @@
+Phonetic algorithm for indexing names by sound
diff --git a/basis/soundex/tags.txt b/extra/soundex/tags.txt
similarity index 100%
rename from basis/soundex/tags.txt
rename to extra/soundex/tags.txt