diff --git a/src/extras/shaders/es2/morphphong.vert b/src/extras/shaders/es2/morphphong.vert
index d091e87c0..89877dca8 100644
--- a/src/extras/shaders/es2/morphphong.vert
+++ b/src/extras/shaders/es2/morphphong.vert
@@ -25,7 +25,7 @@ void main()
         morphNormal = normalize(vertexNormal + vertexNormalTarget * abs(interpolator));
     }
 
-    worldNormal = normalize( modelNormalMatrix * morphPos );
+    worldNormal = normalize( modelNormalMatrix * morphNormal );
     worldPosition = vec3( modelMatrix * vec4( morphPos, 1.0 ) );
 
     gl_Position = modelViewProjection * vec4( morphPos, 1.0 );
diff --git a/src/extras/shaders/gl3/morphphong.vert b/src/extras/shaders/gl3/morphphong.vert
index c74fbdcff..7a8bdd097 100644
--- a/src/extras/shaders/gl3/morphphong.vert
+++ b/src/extras/shaders/gl3/morphphong.vert
@@ -27,7 +27,7 @@ void main()
         morphNormal = normalize(vertexNormal + vertexNormalTarget * abs(interpolator));
     }
 
-    worldNormal = normalize( modelNormalMatrix * morphPos );
+    worldNormal = normalize( modelNormalMatrix * morphNormal );
     worldPosition = vec3( modelMatrix * vec4( morphPos, 1.0 ) );
 
     gl_Position = modelViewProjection * vec4( morphPos, 1.0 );