diff --git a/src/libsodium/randombytes/randombytes_salsa20_random.c b/src/libsodium/randombytes/randombytes_salsa20_random.c
index b3d1931a..f36a188d 100644
--- a/src/libsodium/randombytes/randombytes_salsa20_random.c
+++ b/src/libsodium/randombytes/randombytes_salsa20_random.c
@@ -22,6 +22,7 @@
 #ifdef _WIN32
 # include <Windows.h>
 # include <Wincrypt.h>
+# include <sys/timeb.h>
 #endif
 
 #define SALSA20_RANDOM_BLOCK_SIZE crypto_core_salsa20_OUTPUTBYTES