diff --git a/README.md b/README.md
index f9988acf..c16733ca 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,7 @@ but rather read the examples or the tests.
 In this documentation, 'shall' will be used to indicate a user constraint that is
 mandatory to follow under penalty of undefined behavior.
 'should' will be used to indicate a recommendation to the user.
+All pointers expect non-null argument except if indicated.
 
 Components
 ----------
diff --git a/m-core.h b/m-core.h
index ca08af44..9329818a 100644
--- a/m-core.h
+++ b/m-core.h
@@ -113,7 +113,7 @@
  * dialect. It is expected as M*LIB is a C library.
  *
  * * For clang, the generated functions may not be always used,
- * and CLANG failed to relalize it.
+ * and CLANG failed to realize it.
  * See https://bugs.llvm.org//show_bug.cgi?id=22712
  *
  * * A manualy created buffer is given to fscanf. It is needed