diff --git a/lib/ControlSystemsBase/src/root_locus.jl b/lib/ControlSystemsBase/src/root_locus.jl
index 1ca76093b..fb2f21ece 100644
--- a/lib/ControlSystemsBase/src/root_locus.jl
+++ b/lib/ControlSystemsBase/src/root_locus.jl
@@ -1,4 +1,3 @@
-const Polynomials = ControlSystemsBase.Polynomials
 import ControlSystemsBase.RootLocusResult
 @userplot Rlocusplot
 
@@ -309,4 +308,4 @@ Plot the root locus of the LTISystem `P` as computed by `rlocus`.
     else
         rlocus(p.args[1]; K=K)
     end
-end
\ No newline at end of file
+end