diff --git a/app/Views/activities_detail.php b/app/Views/activities_detail.php
index 1397abb..a9552e5 100644
--- a/app/Views/activities_detail.php
+++ b/app/Views/activities_detail.php
@@ -7,18 +7,49 @@ $filelist = $attachment;
 $file_array = explode (',', $filelist);
 
 function resolve_attachment_relative_path($filename) {
-	$uploadRoot = FCPATH . 'file' . DIRECTORY_SEPARATOR;
-	$pattern = $uploadRoot . '*' . DIRECTORY_SEPARATOR . '*' . DIRECTORY_SEPARATOR . $filename;
-	$matches = @glob($pattern);
-	if ($matches !== false) {
-		foreach ($matches as $match) {
-			if (is_file($match)) {
-				$relative = str_replace('\\', '/', substr($match, strlen($uploadRoot)));
-				return 'file/' . $relative;
+	$filename = trim($filename);
+	if ($filename === '') {
+		return '';
+	}
+
+	$normalized = str_replace('\\', '/', ltrim($filename, '/'));
+
+	$directCandidates = [];
+	if (strpos($normalized, 'file/') === 0 || strpos($normalized, 'upload/') === 0) {
+		$directCandidates[] = $normalized;
+	} else {
+		$directCandidates[] = 'upload/' . $normalized;
+		$directCandidates[] = 'file/' . $normalized;
+	}
+
+	foreach ($directCandidates as $candidate) {
+		$absolutePath = FCPATH . str_replace('/', DIRECTORY_SEPARATOR, $candidate);
+		if (is_file($absolutePath)) {
+			return $candidate;
+		}
+	}
+
+	$basename = basename($normalized);
+	if ($basename === '') {
+		return 'upload/' . $normalized;
+	}
+
+	$roots = ['file', 'upload'];
+	foreach ($roots as $root) {
+		$rootPath = FCPATH . $root . DIRECTORY_SEPARATOR;
+		$pattern = $rootPath . '*' . DIRECTORY_SEPARATOR . '*' . DIRECTORY_SEPARATOR . $basename;
+		$matches = @glob($pattern);
+		if ($matches !== false) {
+			foreach ($matches as $match) {
+				if (is_file($match)) {
+					$relative = str_replace('\\', '/', substr($match, strlen($rootPath)));
+					return $root . '/' . $relative;
+				}
 			}
 		}
 	}
-	return 'file/' . $filename;
+
+	return 'upload/' . $basename;
 }
 
 $i = 1;