diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index a4d9c71dda9e..9a16c5f734d8 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2007-10-26  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
+
+	PR fortran/29784
+	* gfortran.texi: Document that there is no logical/integer
+	conversion performed during I/O operations.
+
 2007-10-22  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR fortran/33849
diff --git a/gcc/fortran/gfortran.texi b/gcc/fortran/gfortran.texi
index 3269e784b060..fb88695fa416 100644
--- a/gcc/fortran/gfortran.texi
+++ b/gcc/fortran/gfortran.texi
@@ -1138,6 +1138,9 @@ zero, and @code{.TRUE.} is interpreted as one.  When converting from
        IF (i) PRINT *, 'True'
 @end smallexample
 
+However, there is no implicit conversion of @code{LOGICAL} and
+@code{INTEGER} values performed during I/O operations.
+
 @node Hollerith constants support
 @section Hollerith constants support
 @cindex Hollerith constants