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-rw-r--r--e-util/e-sorter-array.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/e-util/e-sorter-array.h b/e-util/e-sorter-array.h
index 5fb9c31f6b..07a32b4b82 100644
--- a/e-util/e-sorter-array.h
+++ b/e-util/e-sorter-array.h
@@ -20,6 +20,10 @@
*
*/
+#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
+#error "Only <e-util/e-util.h> should be included directly."
+#endif
+
#ifndef _E_SORTER_ARRAY_H_
#define _E_SORTER_ARRAY_H_