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-rw-r--r--libbacklight.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/libbacklight.h b/libbacklight.h
index 8ef9983..ff0e842 100644
--- a/libbacklight.h
+++ b/libbacklight.h
@@ -1,3 +1,5 @@
+#ifndef LIBBACKLIGHT_H
+#define LIBBACKLIGHT_H
#include <pciaccess.h>
#ifdef __cplusplus
@@ -42,3 +44,5 @@ long backlight_set_brightness(struct backlight *backlight, long brightness);
#ifdef __cplusplus
}
#endif
+
+#endif /* LIBBACKLIGHT_H */