diff --git a/src/duneevaluate.cc b/src/duneevaluate.cc
index 4af3f5ff483120f3d6f1cb63b4f1e00153c4876b..6f4d90595253deff22981877bb14f0ba08fd524d 100644
--- a/src/duneevaluate.cc
+++ b/src/duneevaluate.cc
@@ -11,7 +11,9 @@
 
 #include <cassert>
 
-DEFUN_DLD(duneevaluate, args, nargout, "the help string") {
+DEFUN_DLD(duneevaluate, args, nargout, "duneevaluate(y)\n\
+\n\
+Evaluate x -> 1/2<Ax,x> - <b,x> + H(|x|) at y using DUNE\n") {
   assert(args.length() == 1);
   ColumnVector point(args(0).matrix_value());
 
diff --git a/src/duneminimise.cc b/src/duneminimise.cc
index e0b19bbf55b2da595ad224572e46552cb12c9b7d..7b8b3bd384fb1499f890f9a95ba531f61fd66680 100644
--- a/src/duneminimise.cc
+++ b/src/duneminimise.cc
@@ -11,7 +11,9 @@
 
 #include <cassert>
 
-DEFUN_DLD(duneminimise, args, nargout, "the help string") {
+DEFUN_DLD(duneminimise, args, nargout, "duneminimise(y)\n\
+\n\
+Make a minimisation step of x -> 1/2<Ax,x> - <b,x> + H(|x|) using DUNE starting at x\n") {
   assert(args.length() == 1);
   ColumnVector current(args(0).matrix_value());