diff --git a/test/Materials.cpp b/test/Materials.cpp
index 5e58884ace..54d0ff70f7 100644
--- a/test/Materials.cpp
+++ b/test/Materials.cpp
@@ -184,13 +184,17 @@ TEST_F(MaterialsTest, MaterialParserSortRequest)
     EXPECT_FALSE(material->getParseFlags() & Material::PF_HasSortDefined); // sort is not explicitly set
     EXPECT_EQ(material->getSortRequest(), Material::SORT_DECAL);
 
-    material = materialManager.getMaterial("textures/parsertest/sortPredefined_custom");
+    material = materialManager.getMaterial("textures/parsertest/sort_custom");
     EXPECT_TRUE(material->getParseFlags() & Material::PF_HasSortDefined);
     EXPECT_FLOAT_EQ(material->getSortRequest(), 34.56f);
 
-    material = materialManager.getMaterial("textures/parsertest/sortPredefined_custom2");
+    material = materialManager.getMaterial("textures/parsertest/sort_custom2");
     EXPECT_TRUE(material->getParseFlags() & Material::PF_HasSortDefined);
     EXPECT_FLOAT_EQ(material->getSortRequest(), 34.56f);
+
+    // Update the sort request
+    material->setSortRequest(78.45f);
+    EXPECT_FLOAT_EQ(material->getSortRequest(), 78.45f);
 }
 
 TEST_F(MaterialsTest, MaterialParserAmbientRimColour)
diff --git a/test/resources/tdm/materials/parsertest.mtr b/test/resources/tdm/materials/parsertest.mtr
index 319cd9bd52..08a23d0a24 100644
--- a/test/resources/tdm/materials/parsertest.mtr
+++ b/test/resources/tdm/materials/parsertest.mtr
@@ -33,8 +33,8 @@ textures/parsertest/sortPredefined_afterfog        { sORt aFteRfog }
 textures/parsertest/sortPredefined_postprocess     { sORt pOstProcess }
 textures/parsertest/sortPredefined_portalsky       { sORt pOrtAlsky }
 textures/parsertest/sortPredefined_decal_macro     { DECAL_MACRO }
-textures/parsertest/sortPredefined_custom          { sort 34.56 }
-textures/parsertest/sortPredefined_custom2         { sort portalsky sort 34.56 }
+textures/parsertest/sort_custom                    { sort 34.56 }
+textures/parsertest/sort_custom2                   { sort portalsky sort 34.56 }
 
 textures/parsertest/withAmbientRimColor
 {