diff --git a/basis/specialized-arrays/specialized-arrays-tests.factor b/basis/specialized-arrays/specialized-arrays-tests.factor
index f64542fa00..1e470b699a 100644
--- a/basis/specialized-arrays/specialized-arrays-tests.factor
+++ b/basis/specialized-arrays/specialized-arrays-tests.factor
@@ -2,7 +2,8 @@ IN: specialized-arrays.tests
 USING: tools.test specialized-arrays sequences
 specialized-arrays.int specialized-arrays.bool
 specialized-arrays.ushort alien.c-types accessors kernel
-specialized-arrays.direct.int specialized-arrays.char arrays ;
+specialized-arrays.direct.int specialized-arrays.char
+specialized-arrays.uint arrays combinators ;
 
 [ t ] [ { 1 2 3 } >int-array int-array? ] unit-test
 
@@ -10,7 +11,13 @@ specialized-arrays.direct.int specialized-arrays.char arrays ;
 
 [ 2 ] [ int-array{ 1 2 3 } second ] unit-test
 
-[ t ] [ { t f t } >bool-array underlying>> { 1 0 1 } >char-array underlying>> = ] unit-test
+[ t ] [
+    { t f t } >bool-array underlying>>
+    { 1 0 1 } "bool" heap-size {
+        { 1 [ >char-array ] }
+        { 4 [ >uint-array ] }
+    } case underlying>> =
+] unit-test
 
 [ ushort-array{ 1234 } ] [
     little-endian? B{ 210 4 } B{ 4 210 } ? byte-array>ushort-array