diff --git a/src/AlgebraicGeometry/ToricVarieties/Proj/constructors.jl b/src/AlgebraicGeometry/ToricVarieties/Proj/constructors.jl
index d64664e8178c..90f7fe73a8f1 100644
--- a/src/AlgebraicGeometry/ToricVarieties/Proj/constructors.jl
+++ b/src/AlgebraicGeometry/ToricVarieties/Proj/constructors.jl
@@ -33,7 +33,7 @@ function proj(E::ToricDivisor...)
 end
 
 function proj()
-  @req false "The direct sum is empty."
+  error("The direct sum is empty")
 end
 
 function _proj_and_total_space(is_proj::Bool, E::Vector{T}) where T <: Union{ToricDivisor, ToricLineBundle}
@@ -140,5 +140,5 @@ function total_space(E::ToricDivisor...)
 end
 
 function total_space()
-  @req false "The direct sum is empty."
+  error("The direct sum is empty")
 end
diff --git a/test/AlgebraicGeometry/ToricVarieties/proj.jl b/test/AlgebraicGeometry/ToricVarieties/proj.jl
index ea435f825f86..51dd20b356b7 100644
--- a/test/AlgebraicGeometry/ToricVarieties/proj.jl
+++ b/test/AlgebraicGeometry/ToricVarieties/proj.jl
@@ -1,3 +1,6 @@
+using Oscar
+using Test
+
 @testset "Projectivization of direct sum of line bundles on toric space (set_attributes = $set_attributes)" for set_attributes in [true, false]
   P1 = projective_space(NormalToricVariety, 1; set_attributes)
   @testset "Test of the Hirzebruch surfaces from 0 to 10" begin