diff --git a/test/fixed.jl b/test/fixed.jl
index 8fbb1bf8..3836a9a2 100644
--- a/test/fixed.jl
+++ b/test/fixed.jl
@@ -7,6 +7,25 @@ function symbol_to_inttype(::Type{Fixed}, s::Symbol)
     d[s]
 end
 
+# issue #288
+# The following needs to be outside of `@testset` to reproduce the issue.
+# issue #288
+# The following needs to be outside of `@testset` to reproduce the issue.
+@inline _to_fixed(::Val, x) = x % Q0f7
+@inline _to_fixed(::Val{:Q0f15}, x) = x % Q0f15
+function _issue288(::Type{Fixed}, x)
+    buf = IOBuffer()
+    for sym in (:Q0f7, :Q0f15)
+        show(buf, _to_fixed(Val(sym), x))
+        print(buf, " ")
+    end
+    for sym in (:Q0f15, :Q0f7)
+        show(buf, _to_fixed(Val(sym), x))
+        print(buf, " ")
+    end
+    return String(take!(buf))
+end
+
 function test_op(fun::Fun, fx::F, fy::F, fxf, fyf, tol) where {Fun, F}
     # Make sure that the result is representable
     zf = fun(fxf, fyf)
@@ -282,6 +301,23 @@ end
 
     @test -1 % Q0f7 === Q0f7(-1)
     @test -2 % Q0f7 === Q0f7(0)
+
+    # issue #288
+    expected_issue288 = "-1.0Q0f7 -1.0Q0f15 -1.0Q0f15 -1.0Q0f7 "
+    if _issue288(Fixed, -1.0) == expected_issue288 # just leave it in the report
+        @test _issue288(Fixed, -1.0) == expected_issue288
+    else
+        @test_broken _issue288(Fixed, -1.0) == expected_issue288
+        @warn """broken: "$(_issue288(Fixed, -1.0))"\nexpected: "$expected_issue288" """
+    end
+    # out of range
+    expected_issue288 = "-1.0Q0f7 -1.0Q0f15 -1.0Q0f15 -1.0Q0f7 "
+    if _issue288(Fixed, 1.0) == expected_issue288 # just leave it in the report
+        @test _issue288(Fixed, 1.0) == expected_issue288
+    else
+        @test_broken _issue288(Fixed, 1.0) == expected_issue288
+        @warn """broken: "$(_issue288(Fixed, 1.0))"\nexpected: "$expected_issue288" """
+    end
 end
 
 @testset "neg" begin
diff --git a/test/normed.jl b/test/normed.jl
index 4678182c..8bed8337 100644
--- a/test/normed.jl
+++ b/test/normed.jl
@@ -7,6 +7,25 @@ function symbol_to_inttype(::Type{Normed}, s::Symbol)
     d[s]
 end
 
+# issue #288
+# The following needs to be outside of `@testset` to reproduce the issue.
+@inline _to_normed(::Val, x) = x % N0f8
+@inline _to_normed(::Val{:N0f16}, x) = x % N0f16
+function _issue288(::Type{Normed}, x)
+    buf = IOBuffer()
+    for sym in (:N0f8, :N0f16)
+        print(buf, _to_normed(Val(sym), -1.0))
+        print(buf, " ")
+    end
+    #=
+    for sym in (:N0f16, :N0f8)
+        show(buf, _to_normed(Val(sym), -1.0))
+        print(buf, " ")
+    end
+    =#
+    return String(take!(buf))
+end
+
 @testset "domain of f" begin
     @test_throws DomainError zero(Normed{UInt8,-1})
     @test_throws DomainError zero(Normed{UInt8,0})
@@ -279,6 +298,23 @@ end
     # issue #211
     @test big"1.2" % N0f8 === 0.196N0f8
     @test reinterpret(BigFloat(0x0_01234567_89abcdef) % N63f1) === 0x01234567_89abcdef
+
+    # issue #288
+    expected_issue288 = "1.0N0f8 1.0N0f16 1.0N0f16 1.0N0f8 "
+    if _issue288(Normed, 1.0) == expected_issue288 # just leave it in the report
+        @test _issue288(Normed, 1.0) == expected_issue288
+    else
+        @test_broken _issue288(Normed, 1.0) == expected_issue288
+        @warn """broken: "$(_issue288(Normed, 1.0))"\nexpected: "$expected_issue288" """
+    end
+    # out of range
+    expected_issue288 = "0.502N0f8 0.50001N0f16 0.50001N0f16 0.502N0f8 "
+    if _issue288(Normed, -0.5) == expected_issue288 # just leave it in the report
+        @test _issue288(Normed, -0.5) == expected_issue288
+    else
+        @test_broken _issue288(Normed, -0.5) == expected_issue288
+        @warn """broken: "$(_issue288(Normed, -0.5))"\nexpected: "$expected_issue288" """
+    end
 end
 
 @testset "arithmetic" begin
diff --git a/test/runtests.jl b/test/runtests.jl
index d037d440..32b74c61 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,5 +1,5 @@
 using FixedPointNumbers, Test, Aqua
-
+@info Sys.ARCH
 Aqua.test_all(FixedPointNumbers)
 
 if Sys.ARCH === :x86_64 || Sys.ARCH === :i686