diff --git a/src/_BSplineSpace.jl b/src/_BSplineSpace.jl
index eea0c61b7..0ebf6ac1b 100644
--- a/src/_BSplineSpace.jl
+++ b/src/_BSplineSpace.jl
@@ -273,7 +273,7 @@ isdegenerate(P::BSplineSpace) = isdegenerate_R(P)
 isnondegenerate(P::BSplineSpace, i::Integer) = isnondegenerate_R(P, i)
 isnondegenerate(P::BSplineSpace) = isnondegenerate_R(P)
 
-function _degeneratize_R(P::BSplineSpace{p}) where p
+function _nondegeneratize_R(P::BSplineSpace{p}) where p
     k = copy(KnotVector(knotvector(P)))
     I = Int[]
     for i in 1:dim(P)
@@ -282,7 +282,7 @@ function _degeneratize_R(P::BSplineSpace{p}) where p
     deleteat!(BasicBSpline._vec(k), I)
     return BSplineSpace{p}(k)
 end
-function _degeneratize_I(P::BSplineSpace{p}) where p
+function _nondegeneratize_I(P::BSplineSpace{p}) where p
     k = copy(KnotVector(knotvector(P)))
     l = length(k)
     I = Int[]
diff --git a/src/_ChangeBasis.jl b/src/_ChangeBasis.jl
index 94c2517dc..110fca419 100644
--- a/src/_ChangeBasis.jl
+++ b/src/_ChangeBasis.jl
@@ -396,8 +396,8 @@ function _changebasis_I_old(P::BSplineSpace{p,T}, P′::BSplineSpace{p′,T′})
 end
 
 function __changebasis_I_old(P1, P2)
-    _P1 = _degeneratize_I(P1)
-    _P2 = _degeneratize_I(P2)
+    _P1 = _nondegeneratize_I(P1)
+    _P2 = _nondegeneratize_I(P2)
     A = _changebasis_I_old(P1,P2)
     _A = zero(A)
     _A[isnondegenerate_I.(P1,1:dim(P1)), isnondegenerate_I.(P2,1:dim(P2))] = _changebasis_I_old(_P1,_P2)