diff --git a/pyro/burgers/problems/converge.py b/pyro/burgers/problems/converge.py
index 5b7bf2500..13dc3dd7e 100644
--- a/pyro/burgers/problems/converge.py
+++ b/pyro/burgers/problems/converge.py
@@ -1,3 +1,6 @@
+"""Setup a smooth velocity field (each component is an exponential).  This can
+be used to test convergence of the solver."""
+
 import numpy
 
 from pyro.util import msg
diff --git a/pyro/burgers/problems/test.py b/pyro/burgers/problems/test.py
index 97dbd7b4c..83ea9ce47 100644
--- a/pyro/burgers/problems/test.py
+++ b/pyro/burgers/problems/test.py
@@ -1,3 +1,6 @@
+"""Create a shock moving diagonally (from lower-left to upper-right)
+through the domain."""
+
 from pyro.util import msg
 
 DEFAULT_INPUTS = "inputs.test"
diff --git a/pyro/burgers/problems/tophat.py b/pyro/burgers/problems/tophat.py
index 12bc595d3..163e42fe3 100644
--- a/pyro/burgers/problems/tophat.py
+++ b/pyro/burgers/problems/tophat.py
@@ -1,3 +1,5 @@
+"""Initialize a circular "tophat" region that will drive a shock."""
+
 from pyro.util import msg
 
 DEFAULT_INPUTS = "inputs.tophat"