diff --git a/include/CLI/App.hpp b/include/CLI/App.hpp
index e37d53f1..41b78dee 100644
--- a/include/CLI/App.hpp
+++ b/include/CLI/App.hpp
@@ -573,7 +573,12 @@ public:
                 // Flag, multiple passed
                 } else if(opt->count() > 1) {
                     out << name << "=" << opt->count() << std::endl;
+
+                // Flag, not present
+                } else if(opt->count() == 0 && default_also) {
+                    out << name << "=false" << std::endl;
                 }
+
             }
         }
         for(const App_p &subcom : subcommands_)
diff --git a/tests/IniTest.cpp b/tests/IniTest.cpp
index 934d727c..8fb8e96a 100644
--- a/tests/IniTest.cpp
+++ b/tests/IniTest.cpp
@@ -520,6 +520,9 @@ TEST_F(TApp, IniOutputFlag) {
     EXPECT_THAT(str, Not(HasSubstr("nothing")));
     EXPECT_THAT(str, HasSubstr("onething=true"));
     EXPECT_THAT(str, HasSubstr("something=2"));
+
+    std::string str = app.config_to_str(true);
+    EXPECT_THAT(str, HasSubstr("nothing"));
 }
 
 TEST_F(TApp, IniOutputSet) {