diff --git a/lib/loadMtl.js b/lib/loadMtl.js
index 17a31e7..e220536 100644
--- a/lib/loadMtl.js
+++ b/lib/loadMtl.js
@@ -387,7 +387,7 @@ function createDiffuseAlphaTexture(diffuseTexture, alphaTexture, options) {
         return diffuseTexture;
     }
 
-    if (diffuseTexture.path === alphaTexture.path) {
+    if (diffuseTexture === alphaTexture) {
         return diffuseTexture;
     }
 
@@ -590,7 +590,7 @@ function createSpecularGlossinessMaterial(material, options) {
         emissiveFactor = [1.0, 1.0, 1.0];
     }
 
-    if (defined(diffuseAlphaTexture)) {
+    if (defined(diffuseTexture)) {
         diffuseFactor = [1.0, 1.0, 1.0, 1.0];
     }
 
@@ -611,8 +611,8 @@ function createSpecularGlossinessMaterial(material, options) {
         transparent = alpha < 1.0;
     }
 
-    if (defined(diffuseAlphaTexture)) {
-        transparent = transparent || diffuseAlphaTexture.transparent;
+    if (defined(diffuseTexture)) {
+        transparent = transparent || diffuseTexture.transparent;
     }
 
     const doubleSided = transparent;
@@ -662,7 +662,7 @@ function createMetallicRoughnessMaterial(material, options) {
         emissiveFactor = [1.0, 1.0, 1.0];
     }
 
-    if (defined(diffuseAlphaTexture)) {
+    if (defined(baseColorTexture)) {
         baseColorFactor = [1.0, 1.0, 1.0, 1.0];
     }
 
@@ -683,8 +683,8 @@ function createMetallicRoughnessMaterial(material, options) {
         transparent = alpha < 1.0;
     }
 
-    if (defined(diffuseAlphaTexture)) {
-        transparent = transparent || diffuseAlphaTexture.transparent;
+    if (defined(baseColorTexture)) {
+        transparent = transparent || baseColorTexture.transparent;
     }
 
     const doubleSided = transparent;
diff --git a/specs/lib/loadMtlSpec.js b/specs/lib/loadMtlSpec.js
index 6d7eb7e..fb46c90 100644
--- a/specs/lib/loadMtlSpec.js
+++ b/specs/lib/loadMtlSpec.js
@@ -322,18 +322,16 @@ describe('loadMtl', () => {
             expect(material.doubleSided).toBe(true);
         });
 
-        it('uses diffuse texture if diffuse and alpha are the same', async () => {
+        it('uses diffuse texture if diffuse and alpha are the same', () => {
             options.metallicRoughness = true;
 
-            // The transparent property will be modified so make a copy
-            const diffuseTextureCopy = await loadTexture(diffuseTexturePath, decodeOptions);
             const material = loadMtl._createMaterial({
-                diffuseTexture : diffuseTextureCopy,
+                diffuseTexture : diffuseTexture,
                 alphaTexture : diffuseTexture
             }, options);
 
             const pbr = material.pbrMetallicRoughness;
-            expect(pbr.baseColorTexture).toBe(diffuseTextureCopy);
+            expect(pbr.baseColorTexture).toBe(diffuseTexture);
             expect(material.alphaMode).toBe('BLEND');
             expect(material.doubleSided).toBe(true);
         });
@@ -433,18 +431,16 @@ describe('loadMtl', () => {
             expect(material.doubleSided).toBe(true);
         });
 
-        it('uses diffuse texture if diffuse and alpha are the same', async () => {
+        it('uses diffuse texture if diffuse and alpha are the same', () => {
             options.specularGlossiness = true;
 
-            // The transparent property will be modified so make a copy
-            const diffuseTextureCopy = await loadTexture(diffuseTexturePath, decodeOptions);
             const material = loadMtl._createMaterial({
-                diffuseTexture : diffuseTextureCopy,
+                diffuseTexture : diffuseTexture,
                 alphaTexture : diffuseTexture
             }, options);
 
             const pbr = material.extensions.KHR_materials_pbrSpecularGlossiness;
-            expect(pbr.diffuseTexture).toEqual(diffuseTextureCopy);
+            expect(pbr.diffuseTexture).toEqual(diffuseTexture);
             expect(material.alphaMode).toBe('BLEND');
             expect(material.doubleSided).toBe(true);
         });