3 files changed, 9 insertions, 4 deletions
diff --git a/include/lv2/core/attributes.h b/include/lv2/core/attributes.h
index ab46931..2db876f 100644
--- a/include/lv2/core/attributes.h
+++ b/include/lv2/core/attributes.h
@@ -43,4 +43,4 @@
    @}
 */
 
-#endif /* LV2_CORE_ATTRIBUTES_H */
+#endif // LV2_CORE_ATTRIBUTES_H
diff --git a/include/lv2/core/lv2.h b/include/lv2/core/lv2.h
index 22ed02f..b085ac5 100644
--- a/include/lv2/core/lv2.h
+++ b/include/lv2/core/lv2.h
@@ -3,8 +3,8 @@
 // Copyright 2000-2002 Richard W.E. Furse, Paul Barton-Davis, Stefan Westerfeld.
 // SPDX-License-Identifier: ISC
 
-#ifndef LV2_H_INCLUDED
-#define LV2_H_INCLUDED
+#ifndef LV2_CORE_LV2_H
+#define LV2_CORE_LV2_H
 
 /**
    @defgroup lv2 LV2
@@ -469,4 +469,4 @@ typedef const LV2_Lib_Descriptor* (*LV2_Lib_Descriptor_Function)(
    @}
 */
 
-#endif /* LV2_H_INCLUDED */
+#endif // LV2_CORE_LV2_H
diff --git a/include/lv2/core/lv2_util.h b/include/lv2/core/lv2_util.h
index 8cd2872..167e263 100644
--- a/include/lv2/core/lv2_util.h
+++ b/include/lv2/core/lv2_util.h
@@ -1,6 +1,9 @@
 // Copyright 2016 David Robillard <d@drobilla.net>
 // SPDX-License-Identifier: ISC
 
+#ifndef LV2_CORE_LV2_UTIL_H
+#define LV2_CORE_LV2_UTIL_H
+
 /**
    @defgroup util Utilities
    @ingroup lv2core
@@ -88,3 +91,5 @@ lv2_features_query(const LV2_Feature* const* features, ...)
 /**
    @}
 */
+
+#endif // LV2_CORE_LV2_UTIL_H