diff --git a/jl-cours/mdtheorem.tex b/jl-cours/mdtheorem.tex
index be27ea8..d8fd3a1 100644
--- a/jl-cours/mdtheorem.tex
+++ b/jl-cours/mdtheorem.tex
@@ -143,7 +143,7 @@
 }
 
 % commentaire
-\mdtheorem[style=quote, frametitle=none,
+\mdtheorem[style=comment, frametitle=none,
            frametitleaboveskip=0em, frametitlebelowskip=0em]{@com}{}
 
 \RenewDocumentEnvironment{@com}{ o } {%begin
@@ -153,7 +153,7 @@
    \begin{@com*}[#1]
  }
 }{%end
-\end{@com*}
+  \end{@com*}
 }
 
 % remarque
@@ -208,16 +208,28 @@
 
 % application
 \mdtheorem[style=cogs, theoremseparator={ -},
-           theoremspace={}]{@app}{Application}
+           theoremspace={}]{@app1}{Application}
+\mdtheorem[style=cogs, theoremseparator={ -},
+          theoremspace={}]{@app2}{}
 
-\RenewDocumentEnvironment{@app}{ o } {%begin
+\RenewDocumentEnvironment{@app1}{ o } {%begin
   \IfNoValueTF {#1} {
-    \begin{@app*}
+    \begin{@app1*}
   }{
-    \begin{@app*}[#1]
+    \begin{@app1*}[#1]
   }
 }{%end
-  \end{@app*}
+  \end{@app2*}
+}
+
+\RenewDocumentEnvironment{@app2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@app2*}
+  }{
+    \begin{@app2*}[#1]
+  }
+}{%end
+  \end{@app2*}
 }
 
 % methode