diff --git a/ChangeLog b/ChangeLog
index b17b304a3..6bccce276 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2002-01-08  Lutz Müller <urc8@rz.uni-karlsruhe.de>
+
+	* configure.in: Substitute AM_PROG_LIBTOOL by AC_PROG_LIBTOOL (first
+	  is deprecated).
+
 2002-01-07  Lutz Müller <urc8@rz.uni-karlsruhe.de>
 
 	* frontends/command-line/main.c: Correctly shut down the camera even
diff --git a/configure.in b/configure.in
index dded9bea8..4e7bbf933 100644
--- a/configure.in
+++ b/configure.in
@@ -76,7 +76,7 @@ dnl ---------------------------------------------------------------------------
 dnl Commented out for now because lt_dlforeachfile will not do anything if it
 dnl has already been called before.
 dnl
-AM_PROG_LIBTOOL
+AC_PROG_LIBTOOL
 no_libtool=true
 dnl AC_CHECK_LIB(ltdl, lt_dlforeachfile,
 dnl	AC_CHECK_HEADER(ltdl.h,
diff --git a/libgphoto2_port/ChangeLog b/libgphoto2_port/ChangeLog
index e8b136340..08e9dfe44 100644
--- a/libgphoto2_port/ChangeLog
+++ b/libgphoto2_port/ChangeLog
@@ -1,3 +1,8 @@
+2002-01-08  Lutz Müller <urc8@rz.uni-karlsruhe.de>
+
+        * configure.in: Substitute AM_PROG_LIBTOOL by AC_PROG_LIBTOOL (first
+          is deprecated).
+
 2002-01-04 Dan Fandrich <dan@coneharvesters.com>
 
 	* libgphoto2_port/configure.in: Only add gcc-specific CFLAGS if we're
diff --git a/libgphoto2_port/configure.in b/libgphoto2_port/configure.in
index 326361528..ba56280d5 100644
--- a/libgphoto2_port/configure.in
+++ b/libgphoto2_port/configure.in
@@ -49,8 +49,8 @@ dnl                    -ldl isn't needed.
 dnl ---------------------------------------------------------------------------
 dnl Commented out for now because lt_dlforeachfile will not do anything if it
 dnl has already been called before.
-dnl 
-AM_PROG_LIBTOOL
+dnl
+AC_PROG_LIBTOOL
 no_libtool=true
 dnl AC_CHECK_LIB(ltdl, lt_dlforeachfile,
 dnl         AC_CHECK_HEADER(ltdl.h,