diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc6e14b8..b8d4f569 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,7 @@ if(CMAKE_COMPILER_IS_GNUCC)
 endif()
 if(MSVC)
     add_definitions("/W4")
+    add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 endif()
 
 add_library(CLI INTERFACE)
diff --git a/include/CLI/App.hpp b/include/CLI/App.hpp
index 5e4d510e..c8c0ca91 100644
--- a/include/CLI/App.hpp
+++ b/include/CLI/App.hpp
@@ -519,9 +519,9 @@ public:
     }
 
     /// Check with name instead of pointer
-    bool got_subcommand(std::string name) const {
+    bool got_subcommand(std::string name_) const {
         for(const auto subcomptr : selected_subcommands)
-            if(subcomptr->check_name(name))
+            if(subcomptr->check_name(name_))
                 return true;
         return false;
     }
@@ -630,7 +630,7 @@ protected:
         // Collect positionals
         
         // Loop over all positionals
-        for(int i=0; i<missing.size(); i++) {
+        for(size_t i=0; i<missing.size(); i++) {
 
             // Skip non-positionals (speedup)
             if(missing.at(i).first != detail::Classifer::NONE)