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-rw-r--r--camlibs/mars/mars.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/camlibs/mars/mars.h b/camlibs/mars/mars.h
index c6f66b2ab..bb40828bb 100644
--- a/camlibs/mars/mars.h
+++ b/camlibs/mars/mars.h
@@ -18,8 +18,8 @@
* Boston, MA 02110-1301 USA
*/
-#ifndef __mars_H__
-#define __mars_H__
+#ifndef CAMLIBS_MARS_MARS_H
+#define CAMLIBS_MARS_MARS_H
#ifdef HAVE_UNISTD_H
# include <unistd.h>
@@ -50,5 +50,5 @@ int histogram (unsigned char *data, unsigned int size, int *htable_r,
int *htable_g, int *htable_b);
int mars_white_balance (unsigned char *data, unsigned int size, float saturation,
float image_gamma);
-#endif
+#endif /* !defined(CAMLIBS_MARS_MARS_H) */