diff --git a/ndk/platforms/android-3/include/elf.h b/ndk/platforms/android-3/include/elf.h
index 8a86a6390..4bc17a63b 100644
--- a/ndk/platforms/android-3/include/elf.h
+++ b/ndk/platforms/android-3/include/elf.h
@@ -54,5 +54,19 @@ enum {
 
 #include <sys/exec_elf.h>
 
+typedef struct {
+  uint32_t a_type;
+  union {
+    uint32_t a_val;
+  } a_un;
+} Elf32_auxv_t;
+
+typedef struct {
+  uint64_t a_type;
+  union {
+    uint64_t a_val;
+  } a_un;
+} Elf64_auxv_t;
+
 #endif /* _ELF_H */