diff --git a/fips.go b/fips.go
index a35afd0..852d0c0 100644
--- a/fips.go
+++ b/fips.go
@@ -1,22 +1,24 @@
-/*
-see http://www.openssl.org/docs/fips/UserGuide-2.0.pdf
-to set up an environment where fips mode can be enabled
-*/
+// see http://www.openssl.org/docs/fips/UserGuide-2.0.pdf
+// to set up an environment where fips mode can be enabled
+
 package fips
 
-import (
-	"errors"
-)
+import "errors"
 
+// ErrFipsDisabled is returned when this package is built without fips build tag
 var ErrFipsDisabled = errors.New("not built with fips tags")
 
+// ONOFF is either on or off
+type ONOFF int
+
 const (
+	// OFF is off
 	OFF ONOFF = iota
+	// ON is on
 	ON
 )
 
-type ONOFF int
-
+// String is for the Stringer infterface
 func (oo ONOFF) String() string {
 	if oo == ON {
 		return "ON"
diff --git a/fips_off.go b/fips_off.go
index 2500a44..01aa9e8 100644
--- a/fips_off.go
+++ b/fips_off.go
@@ -2,14 +2,17 @@
 
 package fips
 
+// Mode checks whether is FIPS mode is on
 func Mode() (ONOFF, error) {
 	return OFF, ErrFipsDisabled
 }
 
+// ModeSet attempts to turn on FIPS for the context of this executable
 func ModeSet(mode ONOFF) (ONOFF, error) {
 	return OFF, ErrFipsDisabled
 }
 
+// LastError is empty when fips is not built
 func LastError() string {
 	return ""
 }
diff --git a/fips_on.go b/fips_on.go
index 2ee05c8..3f7c1a1 100644
--- a/fips_on.go
+++ b/fips_on.go
@@ -11,7 +11,7 @@ package fips
 import "C"
 import "errors"
 
-// Check whether is FIPS mode is on
+// Mode checks whether is FIPS mode is on
 func Mode() (ONOFF, error) {
 	return ONOFF(C.FIPS_mode()), nil
 }