diff --git a/lib/Makefile.am b/lib/Makefile.am
index 2a316db..a5ebb48 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -28,7 +28,7 @@
 # LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
 # EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 
-INCLUDES			= -I$(top_srcdir)/include
+AM_CPPFLAGS			= -I$(top_srcdir)/include
 MAINTAINERCLEANFILES		= Makefile.in
 
 noinst_LTLIBRARIES		= libipmitool.la
diff --git a/src/Makefile.am b/src/Makefile.am
index ba388d3..cedf63d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,7 +28,7 @@
 # LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
 # EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 SUBDIRS			= plugins
 
 MAINTAINERCLEANFILES	= Makefile.in
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index a2c48ff..7ad8173 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES		= Makefile.in
 
-INCLUDES			= -I$(top_srcdir)/include
+AM_CPPFLAGS			= -I$(top_srcdir)/include
 
 SUBDIRS				= @INTF_LAN@ @INTF_LANPLUS@ @INTF_OPEN@ @INTF_LIPMI@ @INTF_IMB@ @INTF_BMC@ @INTF_FREE@ @INTF_SERIAL@ @INTF_DUMMY@ @INTF_USB@
 DIST_SUBDIRS			= lan lanplus open lipmi imb bmc free serial dummy usb
diff --git a/src/plugins/bmc/Makefile.am b/src/plugins/bmc/Makefile.am
index 66080d6..f9374fe 100644
--- a/src/plugins/bmc/Makefile.am
+++ b/src/plugins/bmc/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_bmc.la
 noinst_LTLIBRARIES	= @INTF_BMC_LIB@
diff --git a/src/plugins/dummy/Makefile.am b/src/plugins/dummy/Makefile.am
index 6fa132e..bbc8048 100644
--- a/src/plugins/dummy/Makefile.am
+++ b/src/plugins/dummy/Makefile.am
@@ -1,6 +1,6 @@
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_dummy.la
 noinst_LTLIBRARIES	= @INTF_DUMMY_LIB@
diff --git a/src/plugins/free/Makefile.am b/src/plugins/free/Makefile.am
index 028281f..7a3a84e 100644
--- a/src/plugins/free/Makefile.am
+++ b/src/plugins/free/Makefile.am
@@ -1,6 +1,6 @@
 MAINTAINERCLEANFILES           = Makefile.in
 
-INCLUDES                       = -I$(top_srcdir)/include
+AM_CPPFLAGS                       = -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES              = libintf_free.la
 noinst_LTLIBRARIES             = @INTF_FREE_LIB@
diff --git a/src/plugins/imb/Makefile.am b/src/plugins/imb/Makefile.am
index 91d5966..6f1b68c 100644
--- a/src/plugins/imb/Makefile.am
+++ b/src/plugins/imb/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES 		= -I$(top_srcdir)/include
+AM_CPPFLAGS 		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_imb.la
 noinst_LTLIBRARIES	= @INTF_IMB_LIB@
diff --git a/src/plugins/lan/Makefile.am b/src/plugins/lan/Makefile.am
index 70e320f..f276f38 100644
--- a/src/plugins/lan/Makefile.am
+++ b/src/plugins/lan/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_lan.la
 noinst_LTLIBRARIES	= @INTF_LAN_LIB@
diff --git a/src/plugins/lanplus/Makefile.am b/src/plugins/lanplus/Makefile.am
index 428eb04..219440e 100644
--- a/src/plugins/lanplus/Makefile.am
+++ b/src/plugins/lanplus/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_lanplus.la
 noinst_LTLIBRARIES	= @INTF_LANPLUS_LIB@
diff --git a/src/plugins/lipmi/Makefile.am b/src/plugins/lipmi/Makefile.am
index 61c50f4..ca7aa0a 100644
--- a/src/plugins/lipmi/Makefile.am
+++ b/src/plugins/lipmi/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES		= Makefile.in
 
-INCLUDES			= -I$(top_srcdir)/include
+AM_CPPFLAGS			= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES		= libintf_lipmi.la
 noinst_LTLIBRARIES		= @INTF_LIPMI_LIB@
diff --git a/src/plugins/open/Makefile.am b/src/plugins/open/Makefile.am
index 89ce711..edc4916 100644
--- a/src/plugins/open/Makefile.am
+++ b/src/plugins/open/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_open.la
 noinst_LTLIBRARIES	= @INTF_OPEN_LIB@
diff --git a/src/plugins/serial/Makefile.am b/src/plugins/serial/Makefile.am
index 5bfbd0d..c1a3083 100644
--- a/src/plugins/serial/Makefile.am
+++ b/src/plugins/serial/Makefile.am
@@ -30,7 +30,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_serial.la
 noinst_LTLIBRARIES	= @INTF_SERIAL_LIB@
diff --git a/src/plugins/usb/Makefile.am b/src/plugins/usb/Makefile.am
index 2a431f7..ce68fb7 100644
--- a/src/plugins/usb/Makefile.am
+++ b/src/plugins/usb/Makefile.am
@@ -31,7 +31,7 @@
 
 MAINTAINERCLEANFILES	= Makefile.in
 
-INCLUDES		= -I$(top_srcdir)/include
+AM_CPPFLAGS		= -I$(top_srcdir)/include
 
 EXTRA_LTLIBRARIES	= libintf_usb.la
 noinst_LTLIBRARIES	= @INTF_USB_LIB@