diff --git a/swig/doc.i b/swig/doc.i
index d693e8ad79..dd17c94696 100644
--- a/swig/doc.i
+++ b/swig/doc.i
@@ -54219,7 +54219,7 @@ C++ includes: mx.hpp ";
 &x, const std::vector< std::vector< double > > &knots, const std::vector<
 casadi_int > &degree, const Dict &opts=Dict()) "
 
-[INTERNAL]   Find first nonzero If failed, returns the number of rows.
+Find first nonzero If failed, returns the number of rows.
 
 ";
 
diff --git a/swig/doc_merged.i b/swig/doc_merged.i
index d61c923562..00e180f4a1 100644
--- a/swig/doc_merged.i
+++ b/swig/doc_merged.i
@@ -42829,7 +42829,7 @@ C++ includes: mx.hpp ";
 
 %feature("docstring") casadi::MX::bspline_dual "
 
-[INTERNAL]   Find first nonzero If failed, returns the number of rows.
+Find first nonzero If failed, returns the number of rows.
 
 ";
 
diff --git a/swig/internal.i b/swig/internal.i
index 24905a07d7..dbda65ebb9 100644
--- a/swig/internal.i
+++ b/swig/internal.i
@@ -1660,9 +1660,6 @@
 %exception  casadi::MX::bspline(const MX &x, const MX &coeffs, const std::vector< std::vector< double > > &knots, const std::vector< casadi_int > &degree, casadi_int m, const Dict &opts=Dict()) {
  CATCH_OR_NOT(INTERNAL_MSG() $action) 
 }
-%exception  casadi::MX::bspline_dual(const std::vector< double > &x, const std::vector< std::vector< double > > &knots, const std::vector< casadi_int > &degree, const Dict &opts=Dict()) {
- CATCH_OR_NOT(INTERNAL_MSG() $action) 
-}
 %exception  casadi::MX::evalf(const MX &expr) {
  CATCH_OR_NOT(INTERNAL_MSG() $action) 
 }