diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index 11e6993e4d3..3d026a928e7 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -60,7 +60,7 @@
 #include "main/php_output.h"
 #include "ext/standard/info.h"
 
-#include "mbfl/mbfl_allocators.h"
+#include "libmbfl/mbfl/mbfl_allocators.h"
 
 #include "php_variables.h"
 #include "php_globals.h"
diff --git a/ext/mbstring/mbstring.h b/ext/mbstring/mbstring.h
index 197e160ecc5..1b54cc23293 100644
--- a/ext/mbstring/mbstring.h
+++ b/ext/mbstring/mbstring.h
@@ -66,7 +66,7 @@
 
 #if HAVE_MBSTRING
 
-#include "mbfilter.h"
+#include "libmbfl/mbfl/mbfilter.h"
 #include "SAPI.h"
 
 #define PHP_MBSTRING_API 20021024