diff --git a/ChangeLog b/ChangeLog
index 08575030..eb4006f1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 Changes in 1.4.13-stable:
  o If the kernel tells us that there are a negative number of bytes to read from a socket, do not believe it.  Fixes bug 2841177; found by Alexander Pronchenkov.
  o Do not allocate the maximum event queue and fd array for the epoll backend at startup.  Instead, start out accepting 32 events at a time, and double the queue's size when it seems that the OS is generating events faster than we're requesting them.  Saves up to 512K per epoll-based event_base.  Resolves bug 2839240.
+ o Fix compilation on Android, which forgot to define fd_mask in its sys/select.h
 
 
 Changes in 1.4.12-stable:
diff --git a/configure.in b/configure.in
index bc3eca1f..620fd41c 100644
--- a/configure.in
+++ b/configure.in
@@ -309,6 +309,14 @@ AC_CHECK_TYPES([uint64_t, uint32_t, uint16_t, uint8_t], , ,
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif])
+AC_CHECK_TYPES([fd_mask], , ,
+[#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SELECT_H
+#include <select.h>
+#endif])
+
 AC_CHECK_SIZEOF(long long)
 AC_CHECK_SIZEOF(int)
 AC_CHECK_SIZEOF(short)
diff --git a/select.c b/select.c
index ca6639fd..ac826fd7 100644
--- a/select.c
+++ b/select.c
@@ -51,6 +51,7 @@
 #endif
 
 #include "event.h"
+#include "evutil.h"
 #include "event-internal.h"
 #include "evsignal.h"
 #include "log.h"
@@ -59,6 +60,13 @@
 #define        howmany(x, y)   (((x)+((y)-1))/(y))
 #endif
 
+#ifndef _EVENT_HAVE_FD_MASK
+/* This type is mandatory, but Android doesn't define it. */
+#undef NFDBITS
+#define NFDBITS (sizeof(long)*8)
+typedef unsigned long fd_mask;
+#endif
+
 struct selectop {
 	int event_fds;		/* Highest fd in fd set */
 	int event_fdsz;