diff --git a/ChangeLog b/ChangeLog
index e2d0d74e2a..c44a5bab51 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2000-07-07  Jean-Marc Lasgouttes  <Jean-Marc.Lasgouttes@inria.fr>
+
+	* configure.in: add check for strings.h header.
+
+	* src/spellchecker.C: include <strings.h> to make sure that
+	bzero() is defined (needed by FD_ZERO at least on AIX).
+
 2000-07-05  Jean-Marc Lasgouttes  <Jean-Marc.Lasgouttes@inria.fr>
 
  	* src/LaTeX.C: Patch from Baruch to add hebrew table of
diff --git a/configure.in b/configure.in
index cda5a52f5a..e02a6f17a8 100644
--- a/configure.in
+++ b/configure.in
@@ -165,7 +165,7 @@ AC_LANG_CPLUSPLUS
 # some standard header files
 AC_HEADER_DIRENT
 AC_HEADER_MAJOR
-AC_CHECK_HEADERS(sys/time.h sys/types.h sys/select.h)
+AC_CHECK_HEADERS(sys/time.h sys/types.h sys/select.h strings.h)
 
 # some annoying header files
 #LYX_PATH_HEADER(stl_string_fwd.h)
diff --git a/src/spellchecker.C b/src/spellchecker.C
index d44a128e90..2f83d7aa74 100644
--- a/src/spellchecker.C
+++ b/src/spellchecker.C
@@ -34,6 +34,10 @@
 #endif
 
 #ifdef HAVE_SYS_SELECT_H
+# ifdef HAVE_STRINGS_H
+   // <strings.h> is needed at least on AIX because FD_ZERO uses bzero().
+#  include <strings.h> 
+# endif
 #include <sys/select.h>
 #endif