diff --git a/src/overlapping/trapezoid_gradients.jl b/src/overlapping/trapezoid_gradients.jl
index e2df23a7a155759809888ed0900d9563ddd2000c..e786c4fa97268f7b8ad760e198fcffb672ff831f 100644
--- a/src/overlapping/trapezoid_gradients.jl
+++ b/src/overlapping/trapezoid_gradients.jl
@@ -5,6 +5,7 @@ module TrapezoidGradients
 
 import JuMP: @constraint, @variable, Model, VariableRef, owner_model, value
 import StaticArrays: SVector
+import LinearAlgebra: norm
 import ...Variables: qvec, rise_time, flat_time, slew_rate, gradient_strength, variables, duration, δ, get_free_variable, VariableType, inverse_slice_thickness
 import ...BuildingBlocks: duration, set_simple_constraints!, fixed
 import ...BuildSequences: @global_model_constructor