diff --git a/Core/HLE/sceHttp.cpp b/Core/HLE/sceHttp.cpp
index 0a00e18ba0..4b142e24cc 100644
--- a/Core/HLE/sceHttp.cpp
+++ b/Core/HLE/sceHttp.cpp
@@ -20,6 +20,7 @@
 #include <numeric>
 #include <mutex>
 #include <algorithm>
+#include <cctype> // for std::tolower
 
 #include "Core/Core.h"
 #include "Core/HLE/HLE.h"
diff --git a/Core/HLE/sceNetInet.cpp b/Core/HLE/sceNetInet.cpp
index a3d13b537d..944879134e 100644
--- a/Core/HLE/sceNetInet.cpp
+++ b/Core/HLE/sceNetInet.cpp
@@ -39,6 +39,7 @@
 
 #include <iostream>
 #include <shared_mutex>
+#include <algorithm>
 
 #include "Core/HLE/sceNp.h"
 #include "Core/Reporting.h"