diff --git a/esp32/README.rst b/esp32/README.rst
index a9f618e..6c64de2 100644
--- a/esp32/README.rst
+++ b/esp32/README.rst
@@ -177,7 +177,7 @@ Adding images codecs support
 Things done to read/writes images in JPEG, PNG, etc..
 
 PNG
-^^^
+---
 
 - Remove `-DWITH_PNG=OFF` and add `-DBUILD_PNG=ON` and `-DBUILD_ZLIB=ON` of the cmake command
   - => The lib `opencv_imgcodecs.a` build pass
@@ -187,7 +187,7 @@ The library is compiled in the `3rdparty/` folder. Copy this folder into the esp
 
 
 JPEG
-^^^^
+----
 
 - Remove `-DWITH_JPEG=OFF` and add `-DBUILD_JPEG=ON` of the cmake command
   - => Problem at compilation time. TODO