diff --git a/+euphonic/install_python_modules.m b/+euphonic/install_python_modules.m
index f556a3c..4e95aba 100644
--- a/+euphonic/install_python_modules.m
+++ b/+euphonic/install_python_modules.m
@@ -6,6 +6,9 @@ function install_python_modules()
     % >>  euphonic.install_python_modules
 
     req_mods = required_modules;
+    if isempty(req_mods)
+        return
+    end
 
     pipe = py.subprocess.PIPE;
     kwargs = pyargs('stdout', pipe, 'stderr', pipe);
diff --git a/light_python_wrapper b/light_python_wrapper
index 684dc30..2800cff 160000
--- a/light_python_wrapper
+++ b/light_python_wrapper
@@ -1 +1 @@
-Subproject commit 684dc30c5667d203946165ff5ef11c819ceb0cd7
+Subproject commit 2800cffcce4c24d179d3b2f5bd64795bcf2fcad2