diff --git a/examples/math_exam/MathExam/MathExam.thy b/examples/math_exam/MathExam/MathExam.thy
index 9772699..0699adf 100644
--- a/examples/math_exam/MathExam/MathExam.thy
+++ b/examples/math_exam/MathExam/MathExam.thy
@@ -1,6 +1,6 @@
 (*<*)
 theory MathExam
-  imports "Isabelle_DOF.mathex"
+  imports "Isabelle_DOF.math_exam"
     HOL.Real
 begin
 (*>*)   
diff --git a/examples/math_exam/MathExam/document/isadof.cfg b/examples/math_exam/MathExam/document/isadof.cfg
index f13f22b..3516c38 100644
--- a/examples/math_exam/MathExam/document/isadof.cfg
+++ b/examples/math_exam/MathExam/document/isadof.cfg
@@ -1,2 +1,2 @@
 Template: scrartcl
-Ontology: mathex
+Ontology: math_exam
diff --git a/examples/scholarly_paper/2018_cicm/IsaDofApplications.thy b/examples/scholarly_paper/2018_cicm/IsaDofApplications.thy
index e03b56a..a9d7f65 100644
--- a/examples/scholarly_paper/2018_cicm/IsaDofApplications.thy
+++ b/examples/scholarly_paper/2018_cicm/IsaDofApplications.thy
@@ -389,7 +389,7 @@ text\<open> The document class \inlineisar+figure+ --- supported by the \isadof
 such as @{docitem_ref \<open>fig_figures\<close>}.
 \<close>
          
-subsection*[mathex::example]\<open> The Math-Exam Scenario \<close> 
+subsection*[math_exam::example]\<open> The Math-Exam Scenario \<close> 
 text\<open> The Math-Exam Scenario is an application with mixed formal and 
 semi-formal content. It addresses applications where the author of the exam is not present 
 during the exam and the preparation requires a very rigorous process, as the french 
diff --git a/examples/technical_report/IsaDof_Manual/03_GuidedTour.thy b/examples/technical_report/IsaDof_Manual/03_GuidedTour.thy
index e5587aa..8c98821 100644
--- a/examples/technical_report/IsaDof_Manual/03_GuidedTour.thy
+++ b/examples/technical_report/IsaDof_Manual/03_GuidedTour.thy
@@ -251,7 +251,7 @@ doc_class srac = ec  +
 \end{isar}
 \<close>
 
-section*[mathex::example]\<open> The Math-Exam Scenario \<close> 
+section*[math_exam::example]\<open> The Math-Exam Scenario \<close> 
 text\<open> The Math-Exam Scenario is an application with mixed formal and 
 semi-formal content. It addresses applications where the author of the exam is not present 
 during the exam and the preparation requires a very rigorous process, as the french 
diff --git a/src/ontologies/mathex/DOF-mathex.sty b/src/ontologies/math_exam/DOF-math_exam.sty
similarity index 98%
rename from src/ontologies/mathex/DOF-mathex.sty
rename to src/ontologies/math_exam/DOF-math_exam.sty
index 48b0b85..1212629 100644
--- a/src/ontologies/mathex/DOF-mathex.sty
+++ b/src/ontologies/math_exam/DOF-math_exam.sty
@@ -12,7 +12,7 @@
 %%   SPDX-License-Identifier: LPPL-1.0+ OR BSD-2-Clause
 
 \NeedsTeXFormat{LaTeX2e}\relax
-\ProvidesPackage{DOF-mathex}
+\ProvidesPackage{DOF-math_exam}
   [0000/00/00 Unreleased v0.0.0+%
   Document-Type Support Framework for math classes.]
 
diff --git a/src/ontologies/mathex/mathex.thy b/src/ontologies/math_exam/math_exam.thy
similarity index 99%
rename from src/ontologies/mathex/mathex.thy
rename to src/ontologies/math_exam/math_exam.thy
index fc938dd..be32c2a 100644
--- a/src/ontologies/mathex/mathex.thy
+++ b/src/ontologies/math_exam/math_exam.thy
@@ -1,4 +1,4 @@
-theory mathex
+theory math_exam
  imports "../../DOF/Isa_COL"
 begin
   
diff --git a/src/ontologies/ontologies.thy b/src/ontologies/ontologies.thy
index aede5e8..7cc6ee4 100644
--- a/src/ontologies/ontologies.thy
+++ b/src/ontologies/ontologies.thy
@@ -3,7 +3,7 @@ theory
 imports
   "CENELEC_50128/CENELEC_50128"
   "Conceptual/Conceptual"
-  "mathex/mathex"
+  "math_exam/math_exam"
   "math_paper/math_paper"
   "scholarly_paper/scholarly_paper"
   "small_math/small_math"