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-rw-r--r--src/shared/efivars.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/shared/efivars.c b/src/shared/efivars.c
index 3e59ee5e7d..70b6ce1cc7 100644
--- a/src/shared/efivars.c
+++ b/src/shared/efivars.c
@@ -22,6 +22,7 @@
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
+#include <ctype.h>
#include "util.h"
#include "utf8.h"