diff --git a/test/testhelpers/Quaternions.jl b/test/testhelpers/Quaternions.jl
index 3413dd514f8b6..81b7a0c2d0121 100644
--- a/test/testhelpers/Quaternions.jl
+++ b/test/testhelpers/Quaternions.jl
@@ -34,7 +34,9 @@ Base.:(*)(q::Quaternion, w::Quaternion) = Quaternion(q.s*w.s - q.v1*w.v1 - q.v2*
                                             q.s*w.v2 - q.v1*w.v3 + q.v2*w.s + q.v3*w.v1,
                                             q.s*w.v3 + q.v1*w.v2 - q.v2*w.v1 + q.v3*w.s)
 Base.:(*)(q::Quaternion, r::Real) = Quaternion(q.s*r, q.v1*r, q.v2*r, q.v3*r)
-Base.:(*)(q::Quaternion, b::Bool) = b * q # remove method ambiguity
+Base.:(*)(q::Quaternion, r::Bool) = Quaternion(q.s*r, q.v1*r, q.v2*r, q.v3*r) # remove method ambiguity
+Base.:(*)(r::Real, q::Quaternion) = q * r
+Base.:(*)(r::Bool, q::Quaternion) = q * r # remove method ambiguity
 Base.:(/)(q::Quaternion, w::Quaternion) = q * conj(w) * (1.0 / abs2(w))
 Base.:(\)(q::Quaternion, w::Quaternion) = conj(q) * w * (1.0 / abs2(q))