diff --git a/include/mio/detail/mmap.ipp b/include/mio/detail/mmap.ipp
index 1b6dc4d..7debf93 100644
--- a/include/mio/detail/mmap.ipp
+++ b/include/mio/detail/mmap.ipp
@@ -27,7 +27,9 @@
 
 #include <algorithm>
 
-#ifndef _WIN32
+#ifdef _WIN32
+# include <vector>
+#else
 # include <unistd.h>
 # include <fcntl.h>
 # include <sys/mman.h>
diff --git a/single_include/mio/mio.hpp b/single_include/mio/mio.hpp
index c568a46..3595401 100644
--- a/single_include/mio/mio.hpp
+++ b/single_include/mio/mio.hpp
@@ -769,7 +769,9 @@ template<
 
 #include <algorithm>
 
-#ifndef _WIN32
+#ifdef _WIN32
+# include <vector>
+#else
 # include <unistd.h>
 # include <fcntl.h>
 # include <sys/mman.h>