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-rw-r--r--include/dm.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/dm.h b/include/dm.h
index 2e1afda440..a1b84169e6 100644
--- a/include/dm.h
+++ b/include/dm.h
@@ -3,6 +3,10 @@
* Copyright (c) 2013 Google, Inc
*/
+#ifdef _DM_H_
+#warning "Suspect dm.h is included from a header file - please fix"
+#endif
+
#ifndef _DM_H_
#define _DM_H_