diff --git a/src/linear_algebra.jl b/src/linear_algebra.jl
index 6c2efedb..22b87e14 100644
--- a/src/linear_algebra.jl
+++ b/src/linear_algebra.jl
@@ -57,3 +57,6 @@ function LinearAlgebra.axpby!(α::Number, x::ComponentArray, β::Number, y::Comp
     axpby!(α, getdata(x), β, getdata(y))
     return ComponentArray(y, getaxes(y))
 end
+
+lmul!(a::Number, B::ComponentArray) = ComponentArray(lmul!(a, getdata(B)), getaxes(B))
+
diff --git a/test/runtests.jl b/test/runtests.jl
index 4f4d4167..8d9279af 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -36,7 +36,6 @@ caa = ComponentArray(a = ca, b = sq_mat)
 
 _a, _b, _c = Val.((:a, :b, :c))
 
-
 ## Tests
 @testset "Allocations and Inference" begin
     @test @ballocated($ca.c.a.a) == 0
@@ -690,6 +689,19 @@ end
     @test_throws ArgumentError axpby!(2, x, 3, y)
 end
 
+@testset "lmul!" begin
+    a = rand()
+    x = ComponentArray(a = rand(4), b = rand(4))
+
+    xdata = copy(getdata(x))
+    xaxes = getaxes(x)
+
+    y = lmul!(a, x)
+    @test y == x
+    @test getdata(x) ≈ a * xdata
+    @test getaxes(x) == xaxes
+end
+
 @testset "Autodiff" begin
     include("autodiff_tests.jl")
 end