diff --git a/usr/r/regexp/Makefile b/src/lib/regexp/Makefile
similarity index 100%
rename from usr/r/regexp/Makefile
rename to src/lib/regexp/Makefile
diff --git a/usr/r/regexp/main.go b/src/lib/regexp/main.go
similarity index 100%
rename from usr/r/regexp/main.go
rename to src/lib/regexp/main.go
diff --git a/usr/r/regexp/regexp.go b/src/lib/regexp/regexp.go
similarity index 100%
rename from usr/r/regexp/regexp.go
rename to src/lib/regexp/regexp.go