diff --git a/exe.hpp b/exe.hpp
index e956d983..a0dfd518 100644
--- a/exe.hpp
+++ b/exe.hpp
@@ -12,6 +12,7 @@
 #include <experimental/filesystem>
 
 namespace cruft {
+    /// Returns a path to the current executable.
     std::experimental::filesystem::path image_path (void);
 }