diff --git a/src/bsdfs/dielectric.cpp b/src/bsdfs/dielectric.cpp
index ea66a71b..43449f4b 100644
--- a/src/bsdfs/dielectric.cpp
+++ b/src/bsdfs/dielectric.cpp
@@ -45,7 +45,7 @@ public:
 
 		m_componentCount = 2;
 		m_type = new unsigned int[m_componentCount];
-		m_type[0] = EDeltaReflection | EFrontSide;
+		m_type[0] = EDeltaReflection | EFrontSide | EBackSide;
 		m_type[1] = EDeltaTransmission | EFrontSide | EBackSide;
 		m_combinedType = m_type[0] | m_type[1];
 		m_usesRayDifferentials = false;
@@ -60,7 +60,7 @@ public:
 
 		m_componentCount = 2;
 		m_type = new unsigned int[m_componentCount];
-		m_type[0] = EDeltaReflection | EFrontSide;
+		m_type[0] = EDeltaReflection | EFrontSide | EBackSide;
 		m_type[1] = EDeltaTransmission | EFrontSide | EBackSide;
 		m_combinedType = m_type[0] | m_type[1];
 		m_usesRayDifferentials = false;
diff --git a/src/bsdfs/phong.cpp b/src/bsdfs/phong.cpp
index 80ab54a3..7710f8f6 100644
--- a/src/bsdfs/phong.cpp
+++ b/src/bsdfs/phong.cpp
@@ -46,8 +46,8 @@ public:
 
 		m_componentCount = 2;
 		m_type = new unsigned int[m_componentCount];
-		m_type[0] = EDeltaReflection | EFrontSide;
-		m_type[1] = EDeltaTransmission | EFrontSide;
+		m_type[0] = EDiffuseReflection | EFrontSide;
+		m_type[1] = EGlossyReflection | EFrontSide;
 		m_combinedType = m_type[0] | m_type[1];
 		m_usesRayDifferentials = false;
 	}
@@ -64,8 +64,8 @@ public:
 
 		m_componentCount = 2;
 		m_type = new unsigned int[m_componentCount];
-		m_type[0] = EDeltaReflection | EFrontSide;
-		m_type[1] = EDeltaTransmission | EFrontSide;
+		m_type[0] = EDiffuseReflection | EFrontSide;
+		m_type[1] = EGlossyReflection | EFrontSide;
 		m_combinedType = m_type[0] | m_type[1];
 		m_usesRayDifferentials = 
 			m_diffuseReflectance->usesRayDifferentials() ||
diff --git a/src/bsdfs/roughglass.cpp b/src/bsdfs/roughglass.cpp
index ccb57893..c7f66c6b 100644
--- a/src/bsdfs/roughglass.cpp
+++ b/src/bsdfs/roughglass.cpp
@@ -40,8 +40,8 @@ public:
 
 		m_componentCount = 2;
 		m_type = new unsigned int[m_componentCount];
-		m_type[0] = EDeltaReflection | EFrontSide | EBackSide;
-		m_type[1] = EDeltaTransmission | EFrontSide | EBackSide;
+		m_type[0] = EGlossyReflection | EFrontSide | EBackSide;
+		m_type[1] = EGlossyTransmission | EFrontSide | EBackSide;
 		m_combinedType = m_type[0] | m_type[1];
 		m_usesRayDifferentials = false;
 	}
@@ -56,8 +56,8 @@ public:
 
 		m_componentCount = 2;
 		m_type = new unsigned int[m_componentCount];
-		m_type[0] = EDeltaReflection | EFrontSide | EBackSide;
-		m_type[1] = EDeltaTransmission | EFrontSide | EBackSide;
+		m_type[0] = EGlossyReflection | EFrontSide | EBackSide;
+		m_type[1] = EGlossyTransmission | EFrontSide | EBackSide;
 		m_combinedType = m_type[0] | m_type[1];
 		m_usesRayDifferentials = false;
 	}