diff --git a/openbsc/src/gprs/gprs_sndcp.c b/openbsc/src/gprs/gprs_sndcp.c
index ebda26c..b352aeb 100644
--- a/openbsc/src/gprs/gprs_sndcp.c
+++ b/openbsc/src/gprs/gprs_sndcp.c
@@ -113,7 +113,7 @@
 	unsigned int i;
 
 	/* create a bitmask of needed segments */
-	for (i = 0; i < sne->defrag.highest_seg; i++)
+	for (i = 0; i <= sne->defrag.highest_seg; i++)
 		seg_needed |= (1 << i);
 
 	if (seg_needed == sne->defrag.seg_have)