diff --git a/core/src/main/java/info/rmapproject/core/idservice/HttpArkIdService.java b/core/src/main/java/info/rmapproject/core/idservice/HttpArkIdService.java
index bf8c1ccd..33dc1227 100644
--- a/core/src/main/java/info/rmapproject/core/idservice/HttpArkIdService.java
+++ b/core/src/main/java/info/rmapproject/core/idservice/HttpArkIdService.java
@@ -23,6 +23,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.File;
 import java.net.URI;
 
 public class HttpArkIdService implements IdService {
@@ -131,7 +132,7 @@ private synchronized String getEzid() throws Exception {
 			//OR THE EZID SERVER BEING BUSY SERVICING ANOTHER REQUEST.
 			if(shouldRetry) {
                 try {
-                    wait(RETRY_WAIT_TIME);
+                    Thread.sleep(RETRY_WAIT_TIME);
                 } catch (InterruptedException ie) {
                     log.error("Wait interrupted in retry loop", ie);
                 }
@@ -186,7 +187,7 @@ private void getMoreEzids() {
 			//OR THE EZID SERVER BEING BUSY SERVICING ANOTHER REQUEST.
 			if(shouldRetry){
 				try{
-					wait(RETRY_WAIT_TIME);
+					Thread.sleep(RETRY_WAIT_TIME);
 				}catch(InterruptedException ie){
 					log.error("Wait interrupted in retry loop", ie);
 				}