diff --git a/format.h b/format.h
index 9bd4f131..53a34ffd 100644
--- a/format.h
+++ b/format.h
@@ -35,12 +35,15 @@
 #include <cstddef>  // for std::ptrdiff_t
 #include <cstdio>
 #include <algorithm>
-#include <iterator>
 #include <limits>
 #include <stdexcept>
 #include <string>
 #include <sstream>
 
+#if _SECURE_SCL
+# include <iterator>
+#endif
+
 #ifdef __GNUC__
 # define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
 # define FMT_GCC_EXTENSION __extension__