diff --git a/docs/api/sources.rst b/docs/api/sources.rst
index c5924a4b0c..e3483fd9e7 100644
--- a/docs/api/sources.rst
+++ b/docs/api/sources.rst
@@ -114,8 +114,8 @@ Plane Wave
    :template: module.rst
 
    tidy3d.PlaneWave
-   tidy3d.FixedInPlaneK
-   tidy3d.FixedAngle
+   tidy3d.FixedInPlaneKSpec
+   tidy3d.FixedAngleSpec
 
 The ``PlaneWave`` class represents an incident plane wave of a certain polarization and orientation. This is typically used in conjunction with periodic boundary conditions, e.g. in a unit cell simulation.