diff --git a/src/main/java/jaist/css/covis/cls/Informer.java b/src/main/java/jaist/css/covis/cls/Informer.java
index d0ed886..28e6914 100644
--- a/src/main/java/jaist/css/covis/cls/Informer.java
+++ b/src/main/java/jaist/css/covis/cls/Informer.java
@@ -129,7 +129,7 @@
 			} catch (UnsupportedAudioFileException e) {
 				e.printStackTrace();
 			} catch (IOException e) {
-				e.printStackTrace();
+				// e.printStackTrace();
 			}
 			audioFormat = audioInputStream.getFormat();
 		} catch(NullPointerException np){