diff --git a/src/coding/gsm0503_coding.c b/src/coding/gsm0503_coding.c
index 3fd440f..ce24650 100644
--- a/src/coding/gsm0503_coding.c
+++ b/src/coding/gsm0503_coding.c
@@ -1997,7 +1997,7 @@
 			steal -= h;
 		}
 
-		for (i = 2; i < 5; i++) {
+		for (i = 2; i < 6; i++) {
 			gsm0503_tch_burst_unmap(NULL, &bursts[i * 116], &h, 1);
 			steal -= h;
 		}