diff --git a/macho/architecture.test.ts b/macho/architecture.test.ts
index 655f5bf..f60e75b 100644
--- a/macho/architecture.test.ts
+++ b/macho/architecture.test.ts
@@ -13,21 +13,21 @@ import { Architecture } from './architecture.ts';
 Deno.test('constructor()', () => {
 	const a = new Architecture();
 	assertEquals(a.cpuType(), 0);
-	assertEquals(a.cpuSubType(), 0);
+	assertEquals(a.cpuSubtype(), 0);
 	assertEquals(a.cpuSubtypeFull(), 0);
 });
 
 Deno.test('constructor(type)', () => {
 	const a = new Architecture(0x12345678);
 	assertEquals(a.cpuType(), 0x12345678);
-	assertEquals(a.cpuSubType(), 0xffffff);
+	assertEquals(a.cpuSubtype(), 0xffffff);
 	assertEquals(a.cpuSubtypeFull(), -1);
 });
 
 Deno.test('constructor(type, sub)', () => {
 	const a = new Architecture(0x12345678, 0x23456789);
 	assertEquals(a.cpuType(), 0x12345678);
-	assertEquals(a.cpuSubType(), 0x456789);
+	assertEquals(a.cpuSubtype(), 0x456789);
 	assertEquals(a.cpuSubtypeFull(), 0x23456789);
 });
 
@@ -37,7 +37,7 @@ Deno.test('constructor(archInFile: FatArch)', () => {
 	f.cpusubtype = 0x23456789;
 	const a = new Architecture(f);
 	assertEquals(a.cpuType(), 0x12345678);
-	assertEquals(a.cpuSubType(), 0x456789);
+	assertEquals(a.cpuSubtype(), 0x456789);
 	assertEquals(a.cpuSubtypeFull(), 0x23456789);
 });
 
@@ -47,7 +47,7 @@ Deno.test('constructor(archInFile: FatArch64)', () => {
 	f.cpusubtype = 0x23456789;
 	const a = new Architecture(f);
 	assertEquals(a.cpuType(), 0x12345678);
-	assertEquals(a.cpuSubType(), 0x456789);
+	assertEquals(a.cpuSubtype(), 0x456789);
 	assertEquals(a.cpuSubtypeFull(), 0x23456789);
 });
 
diff --git a/macho/architecture.ts b/macho/architecture.ts
index d7adfe4..e70d60a 100644
--- a/macho/architecture.ts
+++ b/macho/architecture.ts
@@ -75,7 +75,7 @@ export class Architecture {
 	 *
 	 * @returns Masked subtype ID.
 	 */
-	public cpuSubType(): number {
+	public cpuSubtype(): number {
 		return this.second & ~CPU_SUBTYPE_MASK;
 	}
 
diff --git a/macho/machobase.test.ts b/macho/machobase.test.ts
index e14c5da..900a67d 100644
--- a/macho/machobase.test.ts
+++ b/macho/machobase.test.ts
@@ -189,7 +189,7 @@ Deno.test('init', () => {
 		assertEquals(macho.isFlipped(), flip, tag);
 		assertEquals(macho.is64(), bits === 64, tag);
 		assertEquals(macho.architecture().cpuType(), 2, tag);
-		assertEquals(macho.architecture().cpuSubType(), 3, tag);
+		assertEquals(macho.architecture().cpuSubtype(), 3, tag);
 		assertEquals(macho.type(), 4, tag);
 		assertEquals(macho.flags(), 5, tag);
 		assertEquals(macho.headerSize(), header.byteLength, tag);