diff --git a/src/qpack-dec.c b/src/qpack-dec.c
index bb960b4b94..09ec66d675 100644
--- a/src/qpack-dec.c
+++ b/src/qpack-dec.c
@@ -289,10 +289,10 @@ int qpack_decode_fs(const unsigned char *raw, size_t len, struct buffer *tmp,
 		else if (efl_type & QPACK_IFL_BIT) {
 			/* Indexed field line */
 			uint64_t index;
-			unsigned int t;
+			unsigned int static_tbl;
 
 			qpack_debug_printf(stderr, "indexed field line:");
-			t = efl_type & 0x40;
+			static_tbl = efl_type & 0x40;
 			index = qpack_get_varint(&raw, &len, 6);
 			if (len == (uint64_t)-1) {
 				qpack_debug_printf(stderr, "##ERR@%d\n", __LINE__);
@@ -300,10 +300,19 @@ int qpack_decode_fs(const unsigned char *raw, size_t len, struct buffer *tmp,
 				goto out;
 			}
 
-			if (t) {
+			if (static_tbl) {
 				name = qpack_sht[index].n;
 				value = qpack_sht[index].v;
 			}
+			else {
+				/* TODO not implemented
+				 *
+				 * For the moment, this should never happen as
+				 * currently we do not support dynamic table insertion
+				 * and specify an empty table size.
+				 */
+				ABORT_NOW();
+			}
 
 			qpack_debug_printf(stderr,  " t=%d index=%llu", !!t, (unsigned long long)index);
 		}