diff --git a/src/lib/seq-range-array.c b/src/lib/seq-range-array.c
index 5f23204d2f..c29555adbc 100644
--- a/src/lib/seq-range-array.c
+++ b/src/lib/seq-range-array.c
@@ -163,7 +163,7 @@ seq_range_array_add_range_internal(ARRAY_TYPE(seq_range) *array,
 		idx1--;
 
 	if (idx1 == idx2 &&
-	    (idx2 == count || data[idx2].seq1 > seq2+1) &&
+	    (idx2 == count || (seq2 < (uint32_t)-1 && data[idx2].seq1 > seq2+1)) &&
 	    (idx1 == 0 || data[idx1-1].seq2 < seq1-1)) {
 		/* no overlapping */
 		value.seq1 = seq1;
diff --git a/src/lib/test-seq-range-array.c b/src/lib/test-seq-range-array.c
index b66519c8a3..9ac890675e 100644
--- a/src/lib/test-seq-range-array.c
+++ b/src/lib/test-seq-range-array.c
@@ -50,6 +50,11 @@ static void test_seq_range_array_add_merge(void)
 	seq_range_array_add(&range, 1);
 	seq_range_array_add(&range, 2);
 	test_assert(array_count(&range) == 2);
+
+	seq_range_array_add_range(&range, 1, (uint32_t)-1);
+	test_assert(array_count(&range) == 1);
+	seq_range_array_add_range(&range, 1, (uint32_t)-1);
+	test_assert(array_count(&range) == 1);
 	test_end();
 }