diff --git a/src/gradients/fixed_gradients.jl b/src/gradients/fixed_gradients.jl
index cfe3e17f33db25dfed15ab04bff5c8b07bf27c97..b430b21cbbbbce5adf3b3025b5782fd6603e7269 100644
--- a/src/gradients/fixed_gradients.jl
+++ b/src/gradients/fixed_gradients.jl
@@ -1,6 +1,6 @@
 module FixedGradients
 
-import ...BuildingBlock: GradientBlock, fixed
+import ...BuildingBlock: GradientBlock, fixed, BuildingBlock
 import ...Variables: variables, duration, qval