diff --git a/toolsrc/include/pch.h b/toolsrc/include/pch.h
index 683bef171b8..9c9deeb3f2a 100644
--- a/toolsrc/include/pch.h
+++ b/toolsrc/include/pch.h
@@ -46,7 +46,11 @@
 #include <set>
 #include <stdexcept>
 #include <string>
+#if defined(_WIN32)
 #include <sys/timeb.h>
+#else
+#include <sys/time.h>
+#endif
 #include <sys/types.h>
 #include <system_error>
 #include <thread>
diff --git a/toolsrc/src/vcpkg/metrics.cpp b/toolsrc/src/vcpkg/metrics.cpp
index d49cadbe2f8..9e17b237d9f 100644
--- a/toolsrc/src/vcpkg/metrics.cpp
+++ b/toolsrc/src/vcpkg/metrics.cpp
@@ -92,7 +92,7 @@ namespace vcpkg::Metrics
             {
                 encoded.append("\\\"");
             }
-            else if (ch < 0x20 || ch >= 0x80)
+            else if (ch < 0x20 || static_cast<unsigned char>(ch) >= 0x80)
             {
                 // Note: this treats incoming Strings as Latin-1
                 static constexpr const char HEX[16] = {