diff --git a/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/create/CreateIndexURLIndexStore.java b/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/create/CreateIndexURLIndexStore.java
index 77c7cbc1f2..1c212a73b8 100644
--- a/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/create/CreateIndexURLIndexStore.java
+++ b/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/create/CreateIndexURLIndexStore.java
@@ -11,7 +11,7 @@ import java.sql.SQLException;
 public class CreateIndexURLIndexStore implements SQLUpdate {
 
     public static final String CREATE_INDEX_URL_INDEX_STORE =
-            "CREATE INDEX IF NOT EXISTS `project_path_index` ON `url_index_store`(`project_name`, `path`);\n";
+            "CREATE UNIQUE INDEX IF NOT EXISTS `project_path_index` ON `url_index_store`(`project_name`, `path`);\n";
 
     @Override
     public String getSQL() {
diff --git a/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/insert/AddURLIndexSQLUpdate.java b/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/insert/AddURLIndexSQLUpdate.java
index 425d252284..8c6ee53372 100644
--- a/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/insert/AddURLIndexSQLUpdate.java
+++ b/services/git-bridge/src/main/java/uk/ac/ic/wlgitbridge/writelatex/model/db/sql/update/insert/AddURLIndexSQLUpdate.java
@@ -11,7 +11,7 @@ import java.sql.SQLException;
 public class AddURLIndexSQLUpdate implements SQLUpdate {
 
     private static final String ADD_URL_INDEX =
-            "INSERT INTO `url_index_store` (`project_name`, `url`, `path`) VALUES (?, ?, ?);\n";
+            "INSERT OR REPLACE INTO `url_index_store` (`project_name`, `url`, `path`) VALUES (?, ?, ?);\n";
 
     private final String projectName;
     private final String url;