diff --git a/types/ldapjs/index.d.ts b/types/ldapjs/index.d.ts
index 60d2edf44e..5d0298c73b 100644
--- a/types/ldapjs/index.d.ts
+++ b/types/ldapjs/index.d.ts
@@ -366,7 +366,7 @@ declare class Filter {
 export function parseFilter(filterString: string): Filter;
 
 export class EqualityFilter extends Filter {
-	constructor(options: { attribute: string, value: string })
+	constructor(options: { attribute: string, value: string | Buffer })
 }
 
 export class PresenceFilter extends Filter {
diff --git a/types/ldapjs/ldapjs-tests.ts b/types/ldapjs/ldapjs-tests.ts
index 8e38f395ed..cd16328d0b 100644
--- a/types/ldapjs/ldapjs-tests.ts
+++ b/types/ldapjs/ldapjs-tests.ts
@@ -72,6 +72,19 @@ let equalityFilter = new ldap.EqualityFilter({
 });
 equalityFilter.matches({ cn: 'foo' });
 
+let objectGUID = Buffer.from([
+    0x02, 0xa9, 0xe3, 0x6f,
+    0x58, 0x11,
+    0x18, 0x49,
+    0xb5, 0x60,
+    0x60, 0xad, 0x50, 0x86, 0x18, 0xc9
+]);
+let equalityFilterBuffer = new ldap.EqualityFilter({
+	attribute: 'objectGUID',
+	value: objectGUID
+});
+equalityFilterBuffer.matches({ objectGUID });
+
 let presenceFilter = new ldap.PresenceFilter({
 	attribute: 'cn'
 });