diff --git a/library/include/dos.h b/library/include/dos.h
index f827867b..605548a2 100644
--- a/library/include/dos.h
+++ b/library/include/dos.h
@@ -9,7 +9,6 @@
 
 #include <stdio.h>
 #include <stddef.h>
-#include <signal.h>
 #include <sys/resource.h>
 #include <sys/syslimits.h>
 #include <wchar.h>
diff --git a/library/include/stdlib.h b/library/include/stdlib.h
index d7aab4f5..8d78691b 100755
--- a/library/include/stdlib.h
+++ b/library/include/stdlib.h
@@ -11,7 +11,6 @@
 #include <wchar.h>
 #include <alloca.h>
 #include <sys/types.h>
-#include <dos.h>
 
 #ifndef _SYS_CLIB4_STDC_H
 #include <sys/clib4_stdc.h>