--- a/configure.ac
+++ b/configure.ac
@@ -823,7 +823,7 @@ fi
 
 AST_EXT_LIB_CHECK([POPT], [popt], [poptStrerror], [popt.h])
 
-AST_EXT_LIB_CHECK([PRI], [pri], [pri_keypad_facility], [libpri.h])
+AST_EXT_LIB_CHECK([PRI], [pri-bristuff], [pri_keypad_facility], [bristuff/libpri.h])
 
 if test "${USE_PWLIB}" != "no"; then
 	if test -n "${PWLIB_DIR}"; then
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -71,7 +71,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revisi
 #include <zaptel/tonezone.h>
 
 #ifdef HAVE_PRI
-#include <libpri.h>
+#include <bristuff/libpri.h>
 #endif
 
 #include "asterisk/lock.h"