diff --git a/test/test_alloc.jl b/test/test_alloc.jl
index a256384b3..d489fcc48 100644
--- a/test/test_alloc.jl
+++ b/test/test_alloc.jl
@@ -11,7 +11,7 @@ mem = 10
 shifts  = [1:5;]
 nshifts = 5
 
-# without preconditioner and with Ap preallocated, SYMMLQ needs 5 n-vectors: x_lq, vold, v, w, wbar
+# without preconditioner and with Ap preallocated, SYMMLQ needs 5 n-vectors: x_lq, vold, v, w, wbar (= x_cg)
 storage_symmlq(n) = 5 * n
 storage_symmlq_bytes(n) = 8 * storage_symmlq(n)
 
@@ -147,7 +147,7 @@ actual_craig_bytes = @allocated craig(Au, c)
 @test actual_craig_bytes ≤ 1.1 * expected_craig_bytes
 
 # without preconditioner and with (Ap, Aᵀq) preallocated, LSLQ needs:
-# - 4 m-vectors: x_lq, v, w, w̄
+# - 4 m-vectors: x_lq, v, w, w̄ (= x_cg)
 # - 1 n-vector: u
 storage_lslq(n, m) = 4 * m + n
 storage_lslq_bytes(n, m) = 8 * storage_lslq(n, m)