diff --git a/internal/rfc2307/macro.go b/internal/rfc2307/macro.go
index 2e5c3c3..5b3e700 100644
--- a/internal/rfc2307/macro.go
+++ b/internal/rfc2307/macro.go
@@ -5,5 +5,5 @@ Macros defines a single name-to-numericOID macro allowing support for
 RFC 2307 definitions which do not specify explicit numeric OIDs.
 */
 var Macros map[string]string = map[string]string{
-	`nisSchema`:	`1.3.6.1.1.1`,
+	`nisSchema`: `1.3.6.1.1.1`,
 }
diff --git a/internal/rfc2307/oc.go b/internal/rfc2307/oc.go
index 6cff1b0..80e6fea 100644
--- a/internal/rfc2307/oc.go
+++ b/internal/rfc2307/oc.go
@@ -1,7 +1,7 @@
 package rfc2307
 
 type ObjectClassDefinitions []ObjectClassDefinition
-type ObjectClassDefinition  string
+type ObjectClassDefinition string
 
 func (r ObjectClassDefinitions) Len() int {
 	return len(r)
diff --git a/internal/rfc4523/at.go b/internal/rfc4523/at.go
index 42a26db..f400956 100644
--- a/internal/rfc4523/at.go
+++ b/internal/rfc4523/at.go
@@ -8,7 +8,7 @@ func (r AttributeTypeDefinitions) Len() int {
 }
 
 var (
-	AllAttributeTypes	  AttributeTypeDefinitions
+	AllAttributeTypes AttributeTypeDefinitions
 )
 
 var (
diff --git a/internal/rfc4524/at.go b/internal/rfc4524/at.go
index 42f8e7d..119f6bc 100644
--- a/internal/rfc4524/at.go
+++ b/internal/rfc4524/at.go
@@ -37,7 +37,7 @@ var (
 	Secretary,
 	UniqueIdentifier,
 	UserClass,
-	SingleLevelQuality   AttributeTypeDefinition
+	SingleLevelQuality AttributeTypeDefinition
 )
 
 func (r AttributeTypeDefinition) String() string {