diff --git a/ChangeLog.md b/ChangeLog.md
index 60a1f0cf8..43a71ce31 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -9,6 +9,9 @@ More detailed information about incremental changes can be found in the
 
 ### 3.14.7 (2022-xx-yy)
 
+- Fixed that ComputeSensitivityMatrix() of sIpopt assumed that there are
+  no more than two parameters [#578, by Andrea Vescovini].
+
 ### 3.14.6 (2022-05-02)
 
 - Fixed mapping of meta data for inequalities, e.g., constraint names,
diff --git a/contrib/sIPOPT/src/SensAlgorithm.cpp b/contrib/sIPOPT/src/SensAlgorithm.cpp
index fe4e806bf..c895ea882 100644
--- a/contrib/sIPOPT/src/SensAlgorithm.cpp
+++ b/contrib/sIPOPT/src/SensAlgorithm.cpp
@@ -207,7 +207,7 @@ SensAlgorithmExitStatus SensAlgorithm::ComputeSensitivityMatrix(void)
    SmartPtr < IteratesVector > trialcopy;
 
    SmartPtr < DenseVectorSpace > delta_u_space;
-   delta_u_space = new DenseVectorSpace(2);
+   delta_u_space = new DenseVectorSpace(np_);
 
    SmartPtr < DenseVector > delta_u = new DenseVector(GetRawPtr(ConstPtr(delta_u_space)));