diff --git a/config.sub b/config.sub
index f48cdc0..7d51c67 100755
--- a/config.sub
+++ b/config.sub
@@ -1031,7 +1031,7 @@ case $cpu-$vendor in
 		;;
 	c90-unknown | c90-cray)
 		vendor=cray
-		basic_os=${Basic_os:-unicos}
+		basic_os=${basic_os:-unicos}
 		;;
 	fx80-unknown)
 		vendor=alliant
diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data
index 7d3ff2d..0da6118 100644
--- a/testsuite/config-sub.data
+++ b/testsuite/config-sub.data
@@ -203,6 +203,11 @@ c6x-unknown-elf					tic6x-unknown-elf
 c8051						c8051-unknown-elf
 c8051-elf					c8051-unknown-elf
 c90						c90-cray-unicos
+c90-cray					c90-cray-unicos
+c90-linux					c90-cray-linux-gnu
+c90-unicos					c90-cray-unicos
+c90-unknown-linux				c90-cray-linux-gnu
+c90-unknown-unicos				c90-cray-unicos
 cegcc						arm-unknown-cegcc
 clipper						clipper-unknown-none
 clipper-clix					clipper-intergraph-clix