diff --git a/api/file.go b/api/file.go
index 889c9dd1bc..3ef50fbbd5 100644
--- a/api/file.go
+++ b/api/file.go
@@ -33,7 +33,7 @@ func InitFile(r *mux.Router) {
 
 	sr := r.PathPrefix("/files").Subrouter()
 	sr.Handle("/upload", ApiUserRequired(uploadFile)).Methods("POST")
-	sr.Handle("/get/{channel_id:[A-Za-z0-9]+}/{user_id:[A-Za-z0-9]+}/{filename:([A-Za-z0-9]+/)?.+\\.[A-Za-z0-9]{3,}}", ApiAppHandler(getFile)).Methods("GET")
+	sr.Handle("/get/{channel_id:[A-Za-z0-9]+}/{user_id:[A-Za-z0-9]+}/{filename:([A-Za-z0-9]+/)?.+(\\.[A-Za-z0-9]{3,})?}", ApiAppHandler(getFile)).Methods("GET")
 	sr.Handle("/get_public_link", ApiUserRequired(getPublicLink)).Methods("POST")
 }
 
diff --git a/model/utils.go b/model/utils.go
index 093a54e38c..c7f991da20 100644
--- a/model/utils.go
+++ b/model/utils.go
@@ -319,6 +319,6 @@ func ClearMentionTags(post string) string {
 }
 
 var UrlRegex = regexp.MustCompile(`^((?:[a-z]+:\/\/)?(?:(?:[a-z0-9\-]+\.)+(?:[a-z]{2}|aero|arpa|biz|com|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|local|internal))(:[0-9]{1,5})?(?:\/[a-z0-9_\-\.~]+)*(\/([a-z0-9_\-\.]*)(?:\?[a-z0-9+_~\-\.%=&]*)?)?(?:#[a-zA-Z0-9!$&'()*+.=-_~:@/?]*)?)(?:\s+|$)$`)
-var PartialUrlRegex = regexp.MustCompile(`/([A-Za-z0-9]{26})/([A-Za-z0-9]{26})/((?:[A-Za-z0-9]{26})?.+\.[A-Za-z0-9]{3,})`)
+var PartialUrlRegex = regexp.MustCompile(`/([A-Za-z0-9]{26})/([A-Za-z0-9]{26})/((?:[A-Za-z0-9]{26})?.+(?:\.[A-Za-z0-9]{3,})?)`)
 
 var SplitRunes = map[rune]bool{',': true, ' ': true, '.': true, '!': true, '?': true, ':': true, ';': true, '\n': true, '<': true, '>': true, '(': true, ')': true, '{': true, '}': true, '[': true, ']': true, '+': true, '/': true, '\\': true}
diff --git a/store/sql_store.go b/store/sql_store.go
index 606b2cbc16..0d4f76a722 100644
--- a/store/sql_store.go
+++ b/store/sql_store.go
@@ -224,7 +224,7 @@ func (ss SqlStore) CreateFullTextIndexIfNotExists(indexName string, tableName st
 func (ss SqlStore) createIndexIfNotExists(indexName string, tableName string, columnName string, fullText bool) {
 
 	if utils.Cfg.SqlSettings.DriverName == "postgres" {
-		_, err := ss.GetMaster().SelectStr("SELECT to_regclass($1)", indexName)
+		_, err := ss.GetMaster().SelectStr("SELECT $1::regclass", indexName)
 		// It should fail if the index does not exist
 		if err == nil {
 			return
diff --git a/web/react/components/post_body.jsx b/web/react/components/post_body.jsx
index 7871f52b7d..9f598ecb36 100644
--- a/web/react/components/post_body.jsx
+++ b/web/react/components/post_body.jsx
@@ -126,7 +126,7 @@ module.exports = React.createClass({
                 } else if (i < Constants.MAX_DISPLAY_FILES) {
                     postFiles.push(
                         <div className="post-image__column custom-file" key={fileInfo.name+i}>
-                            <a href={fileInfo.path+"."+fileInfo.ext} download={fileInfo.name+"."+fileInfo.ext}>
+                            <a href={fileInfo.path + (fileInfo.ext ? "." + fileInfo.ext : "")} download={fileInfo.name + (fileInfo.ext ? "." + fileInfo.ext : "")}>
                                 <div className={"file-icon "+utils.getIconClassName(type)}/>
                             </a>
                         </div>
diff --git a/web/react/utils/utils.jsx b/web/react/utils/utils.jsx
index 00580af6e3..fbf1e0d4f0 100644
--- a/web/react/utils/utils.jsx
+++ b/web/react/utils/utils.jsx
@@ -546,10 +546,13 @@ module.exports.getIconClassName = function(fileType) {
 
 module.exports.splitFileLocation = function(fileLocation) {
     var fileSplit = fileLocation.split('.');
-    if (fileSplit.length < 2) return {};
 
-    var ext = fileSplit[fileSplit.length-1];
-    fileSplit.splice(fileSplit.length-1,1)
+    var ext = "";
+    if (fileSplit.length > 1) {
+        ext = fileSplit[fileSplit.length - 1];
+        fileSplit.splice(fileSplit.length - 1, 1);
+    }
+
     var filePath = fileSplit.join('.');
     var filename = filePath.split('/')[filePath.split('/').length-1];