diff --git a/src/Mod/Fem/Gui/DlgSettingsFemGeneralImp.cpp b/src/Mod/Fem/Gui/DlgSettingsFemGeneralImp.cpp
index 1cf03d90bf..1d6182261d 100644
--- a/src/Mod/Fem/Gui/DlgSettingsFemGeneralImp.cpp
+++ b/src/Mod/Fem/Gui/DlgSettingsFemGeneralImp.cpp
@@ -43,7 +43,7 @@ DlgSettingsFemGeneralImp::DlgSettingsFemGeneralImp(QWidget* parent)
     ui->cmb_def_solver->clear();
     std::vector<std::string> Solvers = {"None"};
 
-    if (!Fem::Tools::checkIfBinaryExists("CCX", "ccx", "ccx").empty()) {
+    if (!Fem::Tools::checkIfBinaryExists("Ccx", "ccx", "ccx").empty()) {
         Solvers.emplace_back("CalculiX");
     }
     if (!Fem::Tools::checkIfBinaryExists("Elmer", "elmer", "ElmerSolver").empty()) {
diff --git a/src/Mod/Fem/Gui/Workbench.cpp b/src/Mod/Fem/Gui/Workbench.cpp
index 2f2600013d..e2ea74f046 100644
--- a/src/Mod/Fem/Gui/Workbench.cpp
+++ b/src/Mod/Fem/Gui/Workbench.cpp
@@ -167,7 +167,7 @@ Gui::ToolBarItem* Workbench::setupToolBars() const
 
     Gui::ToolBarItem* solve = new Gui::ToolBarItem(root);
     solve->setCommand("Solve");
-    if (!Fem::Tools::checkIfBinaryExists("CCX", "ccx", "ccx").empty()) {
+    if (!Fem::Tools::checkIfBinaryExists("Ccx", "ccx", "ccx").empty()) {
         *solve << "FEM_SolverCalculiXCcxTools";
     }
     if (!Fem::Tools::checkIfBinaryExists("Elmer", "elmer", "ElmerSolver").empty()) {