diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 80758939f..7d381f3e2 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,7 @@
+2000-12-04  Joel Sherrill <joel@OARcorp.com>
+
+        * libc/stdlib/system.c: Avoid compiling do_system() for RTEMS.
+
 2000-12-04  Joel Sherrill <joel@OARcorp.com>
 
         * libc/include/ieeefp.h: Added entries for OpenCores CPUs.
diff --git a/newlib/libc/stdlib/system.c b/newlib/libc/stdlib/system.c
index 770996e57..cc12411e3 100644
--- a/newlib/libc/stdlib/system.c
+++ b/newlib/libc/stdlib/system.c
@@ -106,7 +106,7 @@ system (s)
 
 #endif
 
-#if defined (unix) && !defined (__CYGWIN__)
+#if defined (unix) && !defined (__CYGWIN__) && !defined(__rtems__)
 extern char **environ;
 
 /* Only deal with a pointer to environ, to work around subtle bugs with shared