diff --git a/apps/app_test.c b/apps/app_test.c
index df7b1a47e8..885dd25728 100644
--- a/apps/app_test.c
+++ b/apps/app_test.c
@@ -101,6 +101,7 @@ static int measurenoise(struct ast_channel *chan, int ms, char *who)
 				samples++;
 			}
 		}
+		ast_frfree(f);
 	}
 
 	if (rformat) {