diff --git a/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/utils/client/FHIRToolingClient.java b/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/utils/client/FHIRToolingClient.java
index cd9d665f6..36ddba865 100644
--- a/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/utils/client/FHIRToolingClient.java
+++ b/org.hl7.fhir.dstu3/src/main/java/org/hl7/fhir/dstu3/utils/client/FHIRToolingClient.java
@@ -482,13 +482,9 @@ public class FHIRToolingClient extends FHIRBaseToolingClient {
     recordUse();
     Parameters p = expParams == null ? new Parameters() : expParams.copy();
     p.addParameter().setName("valueSet").setResource(source);
-    if (params == null) {
-      params = new HashMap<>();
+    for (String n : params.keySet()) {
+      p.addParameter().setName(n).setValue(new StringType(params.get(n)));
     }
-      for (String n : params.keySet()) {
-        p.addParameter().setName(n).setValue(new StringType(params.get(n)));
-      }
-
     org.hl7.fhir.dstu3.utils.client.network.ResourceRequest<Resource> result = null;
     try {