diff --git a/include/fls/cor/prm/fsst12/libfsst12.hpp b/include/fls/cor/prm/fsst12/libfsst12.hpp
index be338ac..9bb1310 100644
--- a/include/fls/cor/prm/fsst12/libfsst12.hpp
+++ b/include/fls/cor/prm/fsst12/libfsst12.hpp
@@ -32,7 +32,11 @@
 #include <numeric>
 #include <queue>
 #include <string>
-#include <sys/mman.h>
+#if defined(_WIN32)
+#include <windows.h> // For Windows memory-mapping
+#else
+#include <sys/mman.h> // For POSIX memory-mapping
+#endif
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unordered_set>