diff --git a/ChangeLog.md b/ChangeLog.md
index a780bf08f..89c8301c8 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -9,7 +9,10 @@ More detailed information about incremental changes can be found in the
 
 ### 3.14.12 (2023-xx-yy)
 
-- Fix that a source file was installed and install more header files [#642]
+- Fix that a source file was installed and install more header files.
+  [#641, #642, by Joao Sousa Pinto]
+- Fixed crash of GetIpoptCurrentIterate() and GetIpoptCurrentViolations() in
+  C interface when called before or after IpoptSolve(). [#644, #645, by Robbybp]
 
 ### 3.14.11 (2023-02-07)
 
diff --git a/src/Interfaces/IpStdCInterface.cpp b/src/Interfaces/IpStdCInterface.cpp
index 3c2e86fdf..66969b9ae 100644
--- a/src/Interfaces/IpStdCInterface.cpp
+++ b/src/Interfaces/IpStdCInterface.cpp
@@ -302,14 +302,12 @@ bool GetIpoptCurrentIterate(
    ipnumber*       lambda
 )
 {
-   if (IsNull(ipopt_problem->tnlp))
+   if( IsNull(ipopt_problem->tnlp) )
    {
       return false;
    }
-   else
-   {
-      return ipopt_problem->tnlp->get_curr_iterate(scaled, n, x, z_L, z_U, m, g, lambda);
-   }
+
+   return ipopt_problem->tnlp->get_curr_iterate(scaled, n, x, z_L, z_U, m, g, lambda);
 }
 
 bool GetIpoptCurrentViolations(
@@ -326,12 +324,10 @@ bool GetIpoptCurrentViolations(
    ipnumber*     compl_g
 )
 {
-   if (IsNull(ipopt_problem->tnlp))
+   if( IsNull(ipopt_problem->tnlp) )
    {
       return false;
    }
-   else
-   {
-      return ipopt_problem->tnlp->get_curr_violations(scaled != 0, n, x_L_violation, x_U_violation, compl_x_L, compl_x_U, grad_lag_x, m, nlp_constraint_violation, compl_g);
-   }
+
+   return ipopt_problem->tnlp->get_curr_violations(scaled != 0, n, x_L_violation, x_U_violation, compl_x_L, compl_x_U, grad_lag_x, m, nlp_constraint_violation, compl_g);
 }