diff --git a/contrib/android/block_range.c b/contrib/android/block_range.c
index 0a068826c98c8ba3d5b490b9188202c261d4988b..5a45bca094c43b8fe9c1fb3817ae373c15b22387 100644
--- a/contrib/android/block_range.c
+++ b/contrib/android/block_range.c
@@ -1,4 +1,6 @@
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #include "block_range.h"
 #include <stdio.h>
diff --git a/contrib/android/e2fsdroid.c b/contrib/android/e2fsdroid.c
index 1beb1e25bee8f1d4d33f1bf1b0e36064c567d544..622ad570f2eabc201e0e69cae4dc4ca86221dbd6 100644
--- a/contrib/android/e2fsdroid.c
+++ b/contrib/android/e2fsdroid.c
@@ -1,4 +1,6 @@
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif

 #include "config.h"
 #include <stdio.h>
diff --git a/contrib/android/perms.c b/contrib/android/perms.c
index 680d348e38e9374c2352dc66633132b95fe867fd..bfe06ca365682d4a508dd1634860a9abcf2c6c4b 100644
--- a/contrib/android/perms.c
+++ b/contrib/android/perms.c
@@ -4,6 +4,7 @@
 #include "config.h"
 #include "perms.h"
 #include "support/nls-enable.h"
+#include <linux/capability.h>
 #include <time.h>
 #include <sys/stat.h>