diff --git a/prog/errors.go b/prog/errors.go
index b7a9c58..3e32c8d 100644
--- a/prog/errors.go
+++ b/prog/errors.go
@@ -2,9 +2,6 @@ package prog
 
 import "errors"
 
-// ErrPgrepNotFound occurs when pgrep program is not found.
-var ErrPgrepNotFound = errors.New("pgrep not found")
-
 // ErrNotFound occurs when a process is not presented in a list
 var ErrNotFound = errors.New("process is not on list")