diff --git a/libs/commandlib.cpp b/libs/commandlib.cpp
index 6e530a02..4040d44a 100644
--- a/libs/commandlib.cpp
+++ b/libs/commandlib.cpp
@@ -31,6 +31,7 @@
 
 #if defined ( POSIX )
 
+#include <cstdlib>
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/wait.h>
diff --git a/radiant/qe3.cpp b/radiant/qe3.cpp
index 5c927331..e3256eea 100644
--- a/radiant/qe3.cpp
+++ b/radiant/qe3.cpp
@@ -68,6 +68,10 @@ QEGlobals_t g_qeglobals;
 #define PATH_MAX 260
 #endif
 
+#if defined( POSIX )
+#include <sys/stat.h> // chmod
+#endif
+
 #define RADIANT_MONITOR_ADDRESS "127.0.0.1:39000"