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-rw-r--r--src/lib/device_tree.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/lib/device_tree.c b/src/lib/device_tree.c
index 2e81a08779..b8faab53b8 100644
--- a/src/lib/device_tree.c
+++ b/src/lib/device_tree.c
@@ -18,6 +18,7 @@
#include <assert.h>
#include <commonlib/stdlib.h>
#include <console/console.h>
+#include <ctype.h>
#include <device_tree.h>
#include <endian.h>
#include <stdint.h>