diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/structuremap/StructureMapUtilities.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/structuremap/StructureMapUtilities.java
index a73b95d6e..db512d4a5 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/structuremap/StructureMapUtilities.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/structuremap/StructureMapUtilities.java
@@ -1682,7 +1682,7 @@ public class StructureMapUtilities {
           ExpressionNode expr = (ExpressionNode) tgt.getUserData(MAP_EXPRESSION);
           if (expr == null) {
             expr = fpe.parse(getParamStringNoNull(vars, tgt.getParameter().get(1), tgt.toString()));
-            tgt.setUserData(MAP_WHERE_EXPRESSION, expr);
+            tgt.setUserData(MAP_EXPRESSION, expr);
           }
           List<Base> v = fpe.evaluate(vars, null, null, tgt.getParameter().size() == 2 ? getParam(vars, tgt.getParameter().get(0)) : new BooleanType(false), expr);
           if (v.size() == 0)