diff --git a/corecheck/tests/Makefile.am b/corecheck/tests/Makefile.am
index 009ba810b..fa0c30ffa 100644
--- a/corecheck/tests/Makefile.am
+++ b/corecheck/tests/Makefile.am
@@ -43,7 +43,8 @@ check_PROGRAMS = \
 	as_mmap as_shm \
 	vgprintf
 
-AM_CFLAGS   = $(WERROR) -Winline -Wall -Wshadow -g -O0 -I$(top_srcdir)/include
+AM_CFLAGS   = $(WERROR) -Winline -Wall -Wshadow -g -O0
+AM_CPPFLAGS = -I$(top_builddir)/include
 AM_CXXFLAGS = $(AM_CFLAGS)
 
 vgprintf_SOURCES	= vgprintf.c
diff --git a/memcheck/tests/Makefile.am b/memcheck/tests/Makefile.am
index a3c8bc026..e3e274e9c 100644
--- a/memcheck/tests/Makefile.am
+++ b/memcheck/tests/Makefile.am
@@ -84,7 +84,7 @@ check_PROGRAMS = \
 	writev zeropage
 
 
-AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_builddir)/include
 AM_CFLAGS   = $(WERROR) -Winline -Wall -Wshadow -g 
 AM_CXXFLAGS = $(AM_CFLAGS)
 
diff --git a/none/tests/Makefile.am b/none/tests/Makefile.am
index e3ee37953..3ee4e1668 100644
--- a/none/tests/Makefile.am
+++ b/none/tests/Makefile.am
@@ -59,7 +59,8 @@ check_PROGRAMS = \
 	syscall-restart1 syscall-restart2 system \
 	coolo_sigaction gxx304 yield
 
-AM_CFLAGS   = $(WERROR) -Winline -Wall -Wshadow -g -I$(top_srcdir)/include
+AM_CFLAGS   = $(WERROR) -Winline -Wall -Wshadow -g
+AM_CPPFLAGS = -I$(top_builddir)/include
 AM_CXXFLAGS = $(AM_CFLAGS)
 
 # generic C ones