diff --git a/gpt4all-backend/gptj.cpp b/gpt4all-backend/gptj.cpp
index f0eb0eaa..28164318 100644
--- a/gpt4all-backend/gptj.cpp
+++ b/gpt4all-backend/gptj.cpp
@@ -12,7 +12,17 @@
 #include <string>
 #include <vector>
 #include <iostream>
-#include <unistd.h>
+#if defined(_WIN32) && defined(_MSC_VER)
+    #define WIN32_LEAN_AND_MEAN
+    #ifndef NOMINMAX
+        #define NOMINMAX
+    #endif
+    #include <windows.h>
+    #include <io.h>
+    #include <stdio.h>
+#else
+    #include <unistd.h>
+#endif
 #include <sstream>
 #include <unordered_set>
 
diff --git a/gpt4all-backend/llamamodel.cpp b/gpt4all-backend/llamamodel.cpp
index 272633c7..cccef1f9 100644
--- a/gpt4all-backend/llamamodel.cpp
+++ b/gpt4all-backend/llamamodel.cpp
@@ -13,7 +13,17 @@
 #include <string>
 #include <vector>
 #include <iostream>
-#include <unistd.h>
+#if defined(_WIN32) && defined(_MSC_VER)
+    #define WIN32_LEAN_AND_MEAN
+    #ifndef NOMINMAX
+        #define NOMINMAX
+    #endif
+    #include <windows.h>
+    #include <io.h>
+    #include <stdio.h>
+#else
+    #include <unistd.h>
+#endif
 #include <random>
 #include <thread>
 #include <unordered_set>
diff --git a/gpt4all-backend/mpt.cpp b/gpt4all-backend/mpt.cpp
index e57cc3c6..0eeb9211 100644
--- a/gpt4all-backend/mpt.cpp
+++ b/gpt4all-backend/mpt.cpp
@@ -13,7 +13,17 @@
 #include <string>
 #include <vector>
 #include <iostream>
-#include <unistd.h>
+#if defined(_WIN32) && defined(_MSC_VER)
+    #define WIN32_LEAN_AND_MEAN
+    #ifndef NOMINMAX
+        #define NOMINMAX
+    #endif
+    #include <windows.h>
+    #include <io.h>
+    #include <stdio.h>
+#else
+    #include <unistd.h>
+#endif
 #include <sstream>
 #include <thread>
 #include <unordered_set>