diff --git a/exercises/practice/allergies/.meta/proof.ci.cob b/exercises/practice/allergies/.meta/proof.ci.cob
index 80c1cc9f..ee45883a 100644
--- a/exercises/practice/allergies/.meta/proof.ci.cob
+++ b/exercises/practice/allergies/.meta/proof.ci.cob
@@ -8,23 +8,28 @@
        01 WS-RESULT      PIC A.
        01 WS-RESULT-LIST PIC X(108).
 
-       01 Allergens      VALUE "eggs        peanuts     shellfish   strawberriestomatoes    chocolate   pollen      cats        ".
-           02 Allergen   PIC X(12) OCCURS 8 TIMES.
+       01 ALLERGENS.
+           02 ALLERGEN-NAMES.
+               03 FILLER    PIC X(24) VALUE "eggs        peanuts".
+               03 FILLER    PIC X(24) VALUE "shellfish   strawberries".
+               03 FILLER    PIC X(24) VALUE "tomatoes    chocolate".
+               03 FILLER    PIC X(24) VALUE "pollen      cats".
+           02 FILLER REDEFINES ALLERGEN-NAMES.
+               03 ALLERGEN  PIC X(12) OCCURS 8 TIMES
+                            INDEXED BY INDEX-1 INDEX-2.
 
-       01 idx            PIC 9.
-       01 idx2           PIC 9.
-       01 allergen-value PIC 999.
-       01 shifted        PIC 999.
-       01 list-separator PIC X.
+       01 ALLERGEN-VALUE PIC 999.
+       01 SHIFTED        PIC 999.
+       01 LIST-SEPARATOR PIC X.
 
        PROCEDURE DIVISION.
        ALLERGIC-TO.
            MOVE "N" TO WS-RESULT
-           PERFORM VARYING idx FROM 1 BY 1 UNTIL idx > 8
-               IF Allergen(idx) EQUAL TO WS-ITEM THEN
-                   COMPUTE allergen-value = 2 ** (idx - 1)
-                   DIVIDE WS-SCORE BY allergen-value GIVING shifted
-                   IF FUNCTION REM(shifted; 2) EQUAL TO 1 THEN
+           PERFORM VARYING INDEX-1 FROM 1 BY 1 UNTIL index-1 > 8
+               IF ALLERGEN(INDEX-1) EQUAL TO WS-ITEM THEN
+                   COMPUTE ALLERGEN-VALUE = 2 ** (INDEX-1 - 1)
+                   DIVIDE WS-SCORE BY ALLERGEN-VALUE GIVING SHIFTED
+                   IF FUNCTION REM(SHIFTED; 2) EQUAL TO 1 THEN
                        MOVE "Y" TO WS-RESULT
                        EXIT PERFORM
                    END-IF
@@ -33,17 +38,17 @@
 
        LIST-ALLERGENS.
            MOVE SPACES TO WS-RESULT-LIST
-           MOVE SPACE TO list-separator
-           PERFORM VARYING idx2 FROM 1 BY 1 UNTIL idx2 > 8
-               MOVE Allergen(idx2) TO WS-ITEM
+           MOVE SPACE TO LIST-SEPARATOR
+           PERFORM VARYING INDEX-2 FROM 1 BY 1 UNTIL index-2 > 8
+               MOVE ALLERGEN(INDEX-2) TO WS-ITEM
                PERFORM ALLERGIC-TO
                IF WS-RESULT EQUAL TO "Y" THEN
                    STRING
                        WS-RESULT-LIST DELIMITED BY SPACE
-                       list-separator DELIMITED BY SPACE
-                       Allergen(idx2) DELIMITED BY SPACE
+                       LIST-SEPARATOR DELIMITED BY SPACE
+                       ALLERGEN(INDEX-2) DELIMITED BY SPACE
                        INTO WS-RESULT-LIST
                    END-STRING
-                   MOVE "," TO list-separator
+                   MOVE "," TO LIST-SEPARATOR
                END-IF
            END-PERFORM.