diff --git a/modules/camera/3_0/Metadata.cpp b/modules/camera/3_0/Metadata.cpp
index 440da5f..9b8eb1d 100644
--- a/modules/camera/3_0/Metadata.cpp
+++ b/modules/camera/3_0/Metadata.cpp
@@ -16,6 +16,8 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "Metadata"
 
+#include <errno.h>
+
 #include <system/camera_metadata.h>
 
 #include <log/log.h>
diff --git a/modules/usbcamera/Metadata.cpp b/modules/usbcamera/Metadata.cpp
index 78318f3..b0d2f93 100644
--- a/modules/usbcamera/Metadata.cpp
+++ b/modules/usbcamera/Metadata.cpp
@@ -17,6 +17,8 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "Metadata"
 
+#include <errno.h>
+
 #include <log/log.h>
 
 #define ATRACE_TAG (ATRACE_TAG_CAMERA | ATRACE_TAG_HAL)