diff --git a/plot_types/3D/scatter3d_simple.py b/plot_types/3D/scatter3d_simple.py
index 023a46448ccf..27ffb6abf748 100644
--- a/plot_types/3D/scatter3d_simple.py
+++ b/plot_types/3D/scatter3d_simple.py
@@ -1,7 +1,7 @@
 """
-==============
-3D scatterplot
-==============
+===================
+scatter(xs, ys, zs)
+===================
 
 See `~mpl_toolkits.mplot3d.axes3d.Axes3D.scatter`.
 """
diff --git a/plot_types/3D/surface3d_simple.py b/plot_types/3D/surface3d_simple.py
index b1aff7d23b12..4bcd89350086 100644
--- a/plot_types/3D/surface3d_simple.py
+++ b/plot_types/3D/surface3d_simple.py
@@ -1,6 +1,6 @@
 """
 =====================
-3D surface
+plot_surface(X, Y, Z)
 =====================
 
 See `~mpl_toolkits.mplot3d.axes3d.Axes3D.plot_surface`.
diff --git a/plot_types/3D/trisurf3d_simple.py b/plot_types/3D/trisurf3d_simple.py
index 92832c1b5b3a..3e89d7d44eaa 100644
--- a/plot_types/3D/trisurf3d_simple.py
+++ b/plot_types/3D/trisurf3d_simple.py
@@ -1,7 +1,7 @@
 """
-======================
-Triangular 3D surfaces
-======================
+=====================
+plot_trisurf(x, y, z)
+=====================
 
 See `~mpl_toolkits.mplot3d.axes3d.Axes3D.plot_trisurf`.
 """
diff --git a/plot_types/3D/voxels_simple.py b/plot_types/3D/voxels_simple.py
index c3473e108969..05ce238b0935 100644
--- a/plot_types/3D/voxels_simple.py
+++ b/plot_types/3D/voxels_simple.py
@@ -1,7 +1,7 @@
 """
-==========================
-3D voxel / volumetric plot
-==========================
+=========================
+voxels([x, y, z], filled)
+=========================
 
 See `~mpl_toolkits.mplot3d.axes3d.Axes3D.voxels`.
 """
diff --git a/plot_types/3D/wire3d_simple.py b/plot_types/3D/wire3d_simple.py
index c0eaf40210e8..5578d9f7fe6f 100644
--- a/plot_types/3D/wire3d_simple.py
+++ b/plot_types/3D/wire3d_simple.py
@@ -1,7 +1,7 @@
 """
-=================
-3D wireframe plot
-=================
+=======================
+plot_wireframe(X, Y, Z)
+=======================
 
 See `~mpl_toolkits.mplot3d.axes3d.Axes3D.plot_wireframe`.
 """