diff --git a/src/nupic/os/Directory.cpp b/src/nupic/os/Directory.cpp
index 65fb5d57a5..2d2c2b7c4b 100644
--- a/src/nupic/os/Directory.cpp
+++ b/src/nupic/os/Directory.cpp
@@ -252,7 +252,7 @@ void Iterator::init(const std::string &path) {
                       << ". OS num: " << APR_TO_OS_ERROR(res);
 }
 
-Iterator::~Iterator() {
+Iterator::~Iterator() noexcept(false) {
   apr_status_t res = ::apr_dir_close(handle_);
   ::apr_pool_destroy(pool_);
   NTA_CHECK(res == 0) << "Couldn't close directory."
diff --git a/src/nupic/os/Directory.hpp b/src/nupic/os/Directory.hpp
index 58d8709c0c..e77d5051e1 100644
--- a/src/nupic/os/Directory.hpp
+++ b/src/nupic/os/Directory.hpp
@@ -79,7 +79,7 @@ class Iterator {
 public:
   Iterator(const Path &path);
   Iterator(const std::string &path);
-  ~Iterator();
+  ~Iterator() noexcept(false);
 
   // Resets directory to start. Subsequent call to next()
   // will retrieve the first entry