diff --git a/config.m4 b/config.m4
index ce568a8..8b714bd 100644
--- a/config.m4
+++ b/config.m4
@@ -38,10 +38,9 @@ if test "$PHP_SEASLOG" != "no"; then
         src/Common.c"
     PHP_NEW_EXTENSION(seaslog, $seaslog_source_file, $ext_shared,,,)
 
-    PHP_INSTALL_HEADERS([ext/SeasLog], [*.h config.h include/*.h])
-
-    dnl PHP_ADD_INCLUDE([$ext_srcdir])
-    dnl PHP_ADD_INCLUDE([$ext_srcdir/include])
+    PHP_ADD_INCLUDE([$ext_srcdir])
+    PHP_ADD_INCLUDE([$ext_srcdir/include])
 
+    PHP_ADD_BUILD_DIR($ext_builddir/src)
 fi