diff --git a/phongcolor.frag b/phongcolor.frag
index 3f1b872..f41a518 100644
--- a/phongcolor.frag
+++ b/phongcolor.frag
@@ -1,6 +1,7 @@
 #version 330 core
 
 // material
+uniform vec3 materialAmbient;
 uniform vec3 materialKd;
 uniform vec3 materialKs;
 uniform float materialNs;
@@ -40,6 +41,6 @@ void main(void) {
 	for(i=1; i<nbPointLights+1; ++i)
 		light += computeLight(kd, materialKs, materialNs, pointLights[i*2 -1], varNormal, lightDirInView[i], halfVecInView[i]);
 
-	outColor = vec4(light, 1);
+	outColor = vec4(materialAmbient + light, 1);
 }
 
diff --git a/phongmaterial.cpp b/phongmaterial.cpp
index 4a83f9b..7a9d7f4 100644
--- a/phongmaterial.cpp
+++ b/phongmaterial.cpp
@@ -12,9 +12,10 @@ void PhongMaterial::updateShader()
 void PhongMaterial::bindAttributes()
 {
 	shader->bind();
-    shader->bindVec3(shader->getLocation("materialKd"), kd);
-    shader->bindVec3(shader->getLocation("materialKs"), ks);
-    shader->bindFloat(shader->getLocation("materialNs"), ns);
+	shader->bindVec3(shader->getLocation("materialAmbient"), emission);
+	shader->bindVec3(shader->getLocation("materialKd"), diffuse);
+    shader->bindVec3(shader->getLocation("materialKs"), specular);
+    shader->bindFloat(shader->getLocation("materialNs"), shininess);
     if(diffuse_texture != NULL)
     {
         diffuse_texture->bind(TEX_ID);
diff --git a/phongmaterial.h b/phongmaterial.h
index 56133c7..78a8d1c 100644
--- a/phongmaterial.h
+++ b/phongmaterial.h
@@ -9,17 +9,18 @@ class Texture;
 class PhongMaterial : public Material
 {
 public:
-    glm::vec3 kd;
-    glm::vec3 ks;
-    float ns;
+    glm::vec3 emission;
+    glm::vec3 diffuse;
+    glm::vec3 specular;
+    float shininess;
 	Texture* diffuse_texture;
 	Texture* normal_map;
 
-	PhongMaterial() : kd(0.5f), ks(0.5f), ns(10), diffuse_texture(NULL)
+    PhongMaterial() : emission(0), diffuse(0.5f), specular(0.5f), shininess(10), diffuse_texture(NULL)
     {
 		updateShader();
     }
-	PhongMaterial(glm::vec3 myKd, glm::vec3 myKs, float myNs) : kd(myKd), ks(myKs), ns(myNs), diffuse_texture(NULL)
+    PhongMaterial(glm::vec3 myKd, glm::vec3 myKs, float myNs) : emission(0), diffuse(myKd), specular(myKs), shininess(myNs), diffuse_texture(NULL)
     {
 		updateShader();
     }
diff --git a/phongtexture.frag b/phongtexture.frag
index 7dd50ba..bc8151c 100644
--- a/phongtexture.frag
+++ b/phongtexture.frag
@@ -1,6 +1,7 @@
 #version 330 core
 
 // material
+uniform vec3 materialAmbient;
 uniform vec3 materialKd;
 uniform vec3 materialKs;
 uniform float materialNs;
@@ -43,6 +44,6 @@ void main(void) {
 	for(i=1; i<nbPointLights+1; ++i)
 		light += computeLight(kd, materialKs, materialNs, pointLights[i*2 -1], varNormal, lightDirInView[i], halfVecInView[i]);
 
-	outColor = vec4(light, 1);
+	outColor = vec4(materialAmbient + light, 1);
 }