diff --git a/src/studylist/StudyListWithData.js b/src/studylist/StudyListWithData.js
index c8fd86d3f..c9b005296 100644
--- a/src/studylist/StudyListWithData.js
+++ b/src/studylist/StudyListWithData.js
@@ -69,32 +69,40 @@ class StudyListWithData extends Component {
         }
 
         const { field, order } = searchData.sortData;
-        const sortedStudies = studies
-          .sort(function(a, b) {
-            if (order === 'desc') {
-              if (a[field] < b[field]) {
-                return -1;
-              }
-              if (a[field] > b[field]) {
-                return 1;
-              }
-              return 0;
-            } else {
-              if (a[field] > b[field]) {
-                return -1;
-              }
-              if (a[field] < b[field]) {
-                return 1;
-              }
-              return 0;
-            }
-          })
-          .map(study => {
+        let sortedStudies = studies.map(study => {
+          if (!moment(study.studyDate, 'MMM DD, YYYY', true).isValid()) {
             study.studyDate = moment(study.studyDate, 'YYYYMMDD').format(
               'MMM DD, YYYY'
             );
-            return study;
-          });
+          }
+          return study;
+        });
+
+        sortedStudies.sort(function(a, b) {
+          let fieldA = a[field];
+          let fieldB = b[field];
+          if (field === 'studyDate') {
+            fieldA = moment(fieldA).toISOString();
+            fieldB = moment(fieldB).toISOString();
+          }
+          if (order === 'desc') {
+            if (fieldA < fieldB) {
+              return -1;
+            }
+            if (fieldA > fieldB) {
+              return 1;
+            }
+            return 0;
+          } else {
+            if (fieldA > fieldB) {
+              return -1;
+            }
+            if (fieldA < fieldB) {
+              return 1;
+            }
+            return 0;
+          }
+        });
 
         this.setState({
           studies: sortedStudies,