diff --git a/msl_verify.cpp b/msl_verify.cpp
index 0efedf3..e59e250 100644
--- a/msl_verify.cpp
+++ b/msl_verify.cpp
@@ -6,6 +6,7 @@
 
 #include <filesystem>
 #include <fstream>
+#include <iterator>
 #include <regex>
 
 namespace openpower