diff --git a/libdexfile/external/dex_file_ext.cc b/libdexfile/external/dex_file_ext.cc
index 4432f6a..302e188 100644
--- a/libdexfile/external/dex_file_ext.cc
+++ b/libdexfile/external/dex_file_ext.cc
@@ -18,7 +18,6 @@
 
 #include <inttypes.h>
 #include <stdint.h>
-#include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -43,6 +42,7 @@
 #include <dex/dex_file_loader.h>
 
 extern "C" {
+
 // Wraps DexFile to add the caching needed by the external interface. This is
 // what gets passed over as ExtDexFile*.
 struct ExtDexFile {