diff --git a/code/glTF2Asset.h b/code/glTF2Asset.h
index b4369fe71..d894e9473 100644
--- a/code/glTF2Asset.h
+++ b/code/glTF2Asset.h
@@ -166,7 +166,7 @@ namespace glTF2
 	#define AI_GLB_MAGIC_NUMBER "glTF"
 
 	#define AI_MATKEY_GLTF_PBRMETALLICROUGHNESS_METALLIC_FACTOR "$mat.gltf.pbrMetallicRoughness.metallicFactor", 0,0
-	#define AI_MATKEY_GLTF_PBRMETALLICROUGHNESS_ROUGHNESS_FACTOR "$mat.gltf.pbrMetallicRoughness.metallicFactor", 0, 0
+	#define AI_MATKEY_GLTF_PBRMETALLICROUGHNESS_ROUGHNESS_FACTOR "$mat.gltf.pbrMetallicRoughness.roughnessFactor", 0, 0
 	#define AI_MATKEY_GLTF_PBRMETALLICROUGHNESS_METALLICROUGHNESS_TEXTURE aiTextureType_UNKNOWN, 0
 	#define AI_MATKEY_GLTF_ALPHAMODE "$mat.gltf.alphaMode", 0, 0
 	#define AI_MATKEY_GLTF_ALPHACUTOFF "$mat.gltf.alphaCutoff", 0, 0