diff --git a/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetDisplay.java b/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetDisplay.java
index 6b6be67..b7d9949 100644
--- a/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetDisplay.java
+++ b/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetDisplay.java
@@ -54,8 +54,8 @@ public RepositoryDatasetDisplay(RepositoryFileDataset repositoryFile) {
         if(shouldAdd(repositoryFile.getSex())){
             sex.add(repositoryFile.getSex());
         }
-        if(shouldAdd(repositoryFile.getDoi())){
-            doi.add(repositoryFile.getDoi());
+        if(shouldAdd(repositoryFile.getId().getDoi())){
+            doi.add(repositoryFile.getId().getDoi());
         }
         if(shouldAdd(repositoryFile.getProtocol())){
             protocol.add(repositoryFile.getProtocol());
diff --git a/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetService.java b/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetService.java
index ae7cf17..faaef86 100644
--- a/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetService.java
+++ b/src/main/java/org/kpmp/repositoryDataset/RepositoryDatasetService.java
@@ -77,6 +77,7 @@ public List<RepositoryDatasetDisplay> getRepositoryDataset() throws Exception {
             displayFile.addProtocol(repositoryDataset.getProtocol());
             displayFile.addTissueSource(repositoryDataset.getTissueSource());
             displayFile.addExperimentalStrategy(repositoryDataset.getId().getExperimentalStrategy());
+			displayFile.addDoi(repositoryDataset.getId().getDoi());
             displayFile.addWorkflowType(repositoryDataset.getWorkflowType());
 			displayFile.setAccess(repositoryDataset.getAccess());
             displayFiles.put(repositoryDataset.getId().getDlFileId(), displayFile);
diff --git a/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDataset.java b/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDataset.java
index f9ec6cf..f3f36de 100644
--- a/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDataset.java
+++ b/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDataset.java
@@ -12,7 +12,6 @@ public class RepositoryFileDataset {
     private String tissueType;
     private String ageBinned;
     private String sex;
-    private String doi;
     private String access;
     private String platform;
     private String dataCategory;
@@ -68,16 +67,6 @@ public void setSex(String sex) {
         this.sex = sex;
     }
 
-    @Nullable
-
-    public String getDoi() {
-        return doi;
-    }
-
-    public void setDoi(String doi) {
-        this.doi = doi;
-    }
-
     public String getAccess() {
         return access;
     }
diff --git a/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDatasetId.java b/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDatasetId.java
index 4471677..115cc64 100644
--- a/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDatasetId.java
+++ b/src/main/java/org/kpmp/repositoryDataset/RepositoryFileDatasetId.java
@@ -9,6 +9,7 @@ public class RepositoryFileDatasetId implements Serializable{
     private String dlFileId;
     private String redcapId;
     private String experimentalStrategy;
+    private String doi;
 
     @Column(name = "dl_file_id")
     public String getDlFileId() {
@@ -34,4 +35,14 @@ public String getExperimentalStrategy() {
     public void setExperimentalStrategy(String experimentalStrategy) {
         this.experimentalStrategy = experimentalStrategy;
     }
+
+    public String getDoi() {
+        return this.doi;
+    }
+
+    public void setDoi(String doi) {
+        if (doi != null && !doi.isEmpty()){
+            this.doi = doi;
+        }
+    }
 }
diff --git a/src/test/java/org/kpmp/QueryTest.java b/src/test/java/org/kpmp/QueryTest.java
index fed4f4e..9f107e7 100644
--- a/src/test/java/org/kpmp/QueryTest.java
+++ b/src/test/java/org/kpmp/QueryTest.java
@@ -45,7 +45,6 @@ public void testGetRepositoryDataset() throws Exception {
         repositoryFileDataset.setDataCategory("data_category");
         repositoryFileDataset.setDataFormat(".xlsx");
         repositoryFileDataset.setDataType("dataType");
-        repositoryFileDataset.setDoi("doi");
         repositoryFileDataset.setFileName("Filename.xlsx");
         repositoryFileDataset.setFileSize(size);
         repositoryFileDataset.setPackageId("package_id");
diff --git a/src/test/java/org/kpmp/repositoryDataset/RepositoryFileDatasetTest.java b/src/test/java/org/kpmp/repositoryDataset/RepositoryFileDatasetTest.java
index 93faec1..36d81eb 100644
--- a/src/test/java/org/kpmp/repositoryDataset/RepositoryFileDatasetTest.java
+++ b/src/test/java/org/kpmp/repositoryDataset/RepositoryFileDatasetTest.java
@@ -44,12 +44,6 @@ public void setSex() {
         assertEquals("sex", repositoryDataset.getSex());
     }
 
-    @Test
-    public void setDoi() {
-        repositoryDataset.setDoi("doi_text");
-        assertEquals("doi_text", repositoryDataset.getDoi());
-    }
-
     @Test
     public void setAccess() {
         repositoryDataset.setAccess("open");