diff --git a/reactos/tools/rbuild/pch.h b/reactos/tools/rbuild/pch.h
index c31acbf044c..45b29833a0c 100644
--- a/reactos/tools/rbuild/pch.h
+++ b/reactos/tools/rbuild/pch.h
@@ -32,6 +32,8 @@
 #ifndef MAX_PATH
 #define MAX_PATH _MAX_PATH
 #endif//MAX_PATH
+#else
+#include <unistd.h>
 #endif//WIN32
 
 #include <stdarg.h>
diff --git a/reactos/tools/ssprintf.cpp b/reactos/tools/ssprintf.cpp
index 4c54589fb54..bf47dbc1c96 100644
--- a/reactos/tools/ssprintf.cpp
+++ b/reactos/tools/ssprintf.cpp
@@ -25,6 +25,7 @@
 #include "ssprintf.h"
 
 #ifndef WIN32
+#include <ctype.h>
 #define _finite __finite
 #define _isnan __isnan
 inline int iswdigit ( wchar_t c )