diff --git a/ChangeLog b/ChangeLog
index 1cdf730d..95ed526e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,8 @@
  * src/document.c:
    Update dox for document_compare_by_display_name() with warning
    about parameter addresses.
+ * src/document.h:
+   Use brackets for DOC_FILENAME() macro 'doc' argument.
 
 
 2011-04-12  Enrico Tröger  <enrico(dot)troeger(at)uvena(dot)de>
diff --git a/src/document.h b/src/document.h
index 8009db38..4779e20b 100644
--- a/src/document.h
+++ b/src/document.h
@@ -149,7 +149,7 @@ extern GPtrArray *documents_array;
  *  This macro never returns @c NULL.
  **/
 #define DOC_FILENAME(doc) \
-	(G_LIKELY(doc->file_name != NULL) ? (doc->file_name) : GEANY_STRING_UNTITLED)
+	(G_LIKELY((doc)->file_name != NULL) ? ((doc)->file_name) : GEANY_STRING_UNTITLED)