diff --git a/ext/mbstring/libmbfl/filters/mbfilter_htmlent.c b/ext/mbstring/libmbfl/filters/mbfilter_htmlent.c
index 39023af4753..a53a87e5979 100644
--- a/ext/mbstring/libmbfl/filters/mbfilter_htmlent.c
+++ b/ext/mbstring/libmbfl/filters/mbfilter_htmlent.c
@@ -27,6 +27,8 @@
  * 
  */
 
+#include "php.h"
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
diff --git a/ext/mbstring/libmbfl/mbfl/mbfl_allocators.c b/ext/mbstring/libmbfl/mbfl/mbfl_allocators.c
index be9d345b061..cc13d1544c2 100644
--- a/ext/mbstring/libmbfl/mbfl/mbfl_allocators.c
+++ b/ext/mbstring/libmbfl/mbfl/mbfl_allocators.c
@@ -28,6 +28,8 @@
  *
  */
 
+#include "php.h"
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
diff --git a/ext/mbstring/libmbfl/mbfl/mbfl_encoding.c b/ext/mbstring/libmbfl/mbfl/mbfl_encoding.c
index 7f0dc9ab603..a63ea370c47 100644
--- a/ext/mbstring/libmbfl/mbfl/mbfl_encoding.c
+++ b/ext/mbstring/libmbfl/mbfl/mbfl_encoding.c
@@ -28,6 +28,8 @@
  *
  */
 
+#include "php.h"
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
diff --git a/ext/mbstring/libmbfl/mbfl/mbfl_language.c b/ext/mbstring/libmbfl/mbfl/mbfl_language.c
index be1341ab8c4..5f55a45e234 100644
--- a/ext/mbstring/libmbfl/mbfl/mbfl_language.c
+++ b/ext/mbstring/libmbfl/mbfl/mbfl_language.c
@@ -28,6 +28,8 @@
  *
  */
 
+#include "php.h"
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif