diff --git a/Tests.st b/Tests.st
index d5ac5c6..7109766 100644
--- a/Tests.st
+++ b/Tests.st
@@ -102,53 +102,58 @@ TestCase subclass: BSSAPTest [
 
 TestCase subclass: GSM48Test [
     testKeySeqLu [
-        | gsm msg |
+        | gsm msg res |
+        res := #(16r70) asByteArray.
         msg := Osmo.MessageBuffer new.
         gsm := GSM48KeySeqLuType createDefault.
         gsm writeOnDirect: msg.
 
-        self assert: msg asByteArray = #(16r70) asByteArray
+        self assert: msg asByteArray = res.
     ]
 
     testLai [
-        | gsm msg |
+        | gsm msg res |
+        res := #(16r02 16rF2 16r50 16rFF 16rFE) asByteArray.
         msg := Osmo.MessageBuffer new.
         gsm := GSM48Lai createDefault.
         gsm mcc: 202; mnc: 5; lac: 65534.
         gsm writeOnDirect: msg.
 
-        self assert: msg asByteArray = #(16r02 16rF2 16r50 16rFF 16rFE) asByteArray.
+        self assert: msg asByteArray = res.
     ]
 
     testCM1 [
-        | gsm msg |
+        | gsm msg res |
+        res := #(16r33) asByteArray.
         msg := Osmo.MessageBuffer new.
         gsm := GSM48Classmark1 createDefault.
         gsm writeOnDirect: msg.
 
-        self assert: msg asByteArray = #(16r33) asByteArray
+        self assert: msg asByteArray = res.
     ]
 
     testMI [
-        | gsm msg |
+        | gsm msg res |
+        res := #(8 41 71 128 0 0 0 116 8) asByteArray.
         msg := Osmo.MessageBuffer new.
         gsm := GSM48MIdentity createDefault.
         gsm imsi: '274080000004780'.
         gsm writeOnDirect: msg.
 
-        self assert: msg asByteArray = #(8 41 71 128 0 0 0 116 8) asByteArray.
+        self assert: msg asByteArray = res.
     ]
 
     testLU [
-        | gsm msg |
+        | gsm msg res |
 
+        res := #(5 8 112 2 242 80 255 254 51 8 105 102 1 69 0 114 131 136) asByteArray.
         msg := Osmo.MessageBuffer new.
         gsm := LocationUpdatingRequest new.
         (gsm lai) mcc: 202; mnc: 5; lac: 65534.
         (gsm mi) imsi: '666105400273888'.
         gsm writeOn: msg.
 
-        self assert: msg asByteArray = #(5 8 112 2 242 80 255 254 51 8 105 102 1 69 0 114 131 136) asByteArray.
+        self assert: msg asByteArray = res
     ]
 ]