diff --git a/sounds.txt b/sounds.txt
index 19fc612a73..54e18cccf9 100755
--- a/sounds.txt
+++ b/sounds.txt
@@ -248,6 +248,8 @@
 
 ;digits directory  - File Name Sound File Script
 
+%minus.gsm%minus
+
 %0.gsm%zero
 
 %1.gsm%one