diff --git a/inference-engine/src/plugin_api/caseless.hpp b/inference-engine/src/plugin_api/caseless.hpp
index d8ce739..0dd8886 100644
--- a/inference-engine/src/plugin_api/caseless.hpp
+++ b/inference-engine/src/plugin_api/caseless.hpp
@@ -12,6 +12,7 @@
 #include <algorithm>
 #include <cctype>
 #include <functional>
+#include <iterator>
 #include <map>
 #include <set>
 #include <unordered_map>