diff --git a/src/spek-window.vala b/src/spek-window.vala
index 3382165..7d7c707 100644
--- a/src/spek-window.vala
+++ b/src/spek-window.vala
@@ -215,6 +215,7 @@ namespace Spek {
 
 		private string[] audio_extensions = {
 			"*.3gp",
+			"*.aac",
 			"*.aif",
 			"*.aifc",
 			"*.aiff",