diff --git a/src/input/e1d.c b/src/input/e1d.c
index f7a0b18..4fc0749 100644
--- a/src/input/e1d.c
+++ b/src/input/e1d.c
@@ -256,7 +256,7 @@
 
 			if (!e1i_ts->lapd) {
 				char name[32];
-				e1inp_ts_name(name, e1i_ts);
+				e1inp_ts_name(name, sizeof(name), e1i_ts);
 				e1i_ts->lapd = lapd_instance_alloc2(1,
 					e1d_write_msg, bfd, e1inp_dlsap_up,
 					e1i_ts, &lapd_profile_abis, name);