diff --git a/config.guess b/config.guess
index afd200a33d..c3c4e799a6 100755
--- a/config.guess
+++ b/config.guess
@@ -451,6 +451,13 @@ EOF
     mc68*:A/UX:*:*)
 	echo m68k-apple-aux${UNAME_RELEASE}
 	exit 0 ;;
+    R3000:*System_V*:*:*)
+	if [ -d /usr/nec ]; then
+	        echo mips-nec-sysv${UNAME_RELEASE}
+	else
+	        echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+        exit 0 ;;
 esac
 
 #echo '(No uname command or uname output not recognized.)' 1>&2