diff --git a/src/util/virlog.c b/src/util/virlog.c
index 5810643e1b..5262d613f6 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -87,7 +87,7 @@ VIR_ENUM_IMPL(virLogDestination, VIR_LOG_TO_OUTPUT_LAST,
 struct _virLogFilter {
     char *match;
     virLogPriority priority;
-    unsigned int flags;
+    unsigned int flags; /* bitwise OR of virLogFilterFlags */
 };
 
 static int virLogFiltersSerial = 1;
diff --git a/src/util/virlog.h b/src/util/virlog.h
index 8973f83b20..35dba16cfe 100644
--- a/src/util/virlog.h
+++ b/src/util/virlog.h
@@ -174,7 +174,7 @@ typedef void (*virLogCloseFunc) (void *data);
 
 typedef enum {
     VIR_LOG_STACK_TRACE = (1 << 0),
-} virLogFlags;
+} virLogFilterFlags;
 
 int virLogGetNbFilters(void);
 int virLogGetNbOutputs(void);