diff --git a/docs/sphinx/osaca.api.rst b/docs/sphinx/osaca.api.rst
index 2dabf82..45ac8b1 100644
--- a/docs/sphinx/osaca.api.rst
+++ b/docs/sphinx/osaca.api.rst
@@ -1,8 +1,6 @@
 osaca.api package
 =================
-
-Submodules
-----------
+Provides interfaces to other tools.
 
 osaca.api.kerncraft\_interface module
 -------------------------------------
diff --git a/docs/sphinx/osaca.parser.rst b/docs/sphinx/osaca.parser.rst
index 7a9e7c8..d688b20 100644
--- a/docs/sphinx/osaca.parser.rst
+++ b/docs/sphinx/osaca.parser.rst
@@ -1,8 +1,6 @@
 osaca.parser package
 ====================
-
-Submodules
-----------
+Parser module for parsing the assembly code.
 
 osaca.parser.attr\_dict module
 ------------------------------
diff --git a/docs/sphinx/osaca.rst b/docs/sphinx/osaca.rst
index 45a48c9..3c0f556 100644
--- a/docs/sphinx/osaca.rst
+++ b/docs/sphinx/osaca.rst
@@ -44,12 +44,3 @@ osaca.utils module
    :members:
    :undoc-members:
    :show-inheritance:
-
-
-Module contents
----------------
-
-.. automodule:: osaca
-   :members:
-   :undoc-members:
-   :show-inheritance:
diff --git a/docs/sphinx/osaca.semantics.rst b/docs/sphinx/osaca.semantics.rst
index de27a5f..2b8cac2 100644
--- a/docs/sphinx/osaca.semantics.rst
+++ b/docs/sphinx/osaca.semantics.rst
@@ -1,8 +1,6 @@
 osaca.semantics package
 =======================
-
-Submodules
-----------
+Semantic part of OSACA.
 
 osaca.semantics.arch\_semantics module
 --------------------------------------