diff --git a/platform-independent/c/core/src/mpw-util.c b/platform-independent/c/core/src/mpw-util.c
index e879712e..fa1ebacb 100644
--- a/platform-independent/c/core/src/mpw-util.c
+++ b/platform-independent/c/core/src/mpw-util.c
@@ -103,6 +103,8 @@ void mpw_log_ssink(LogLevel level, const char *file, int line, const char *funct
         if (sink)
             sink( &record );
     }
+    if (!sinks_count)
+        mpw_log_sink_file( &record );
 
     if (record.level <= LogLevelFatal)
         abort();
diff --git a/platform-independent/c/core/src/mpw-util.h b/platform-independent/c/core/src/mpw-util.h
index c43b4634..fd93a0a8 100644
--- a/platform-independent/c/core/src/mpw-util.h
+++ b/platform-independent/c/core/src/mpw-util.h
@@ -53,12 +53,14 @@ typedef struct {
     const char *message;
 } MPLogEvent;
 
-/** A log sink describes a function that can receive log events when registered. */
+/** A log sink describes a function that can receive log events. */
 typedef void (MPLogSink)(const MPLogEvent *event);
+
+/** To receive events, sinks need to be registered.  If no sinks are registered, log events are sent to the mpw_log_sink_file sink. */
 bool mpw_log_sink_register(MPLogSink *sink);
 bool mpw_log_sink_unregister(MPLogSink *sink);
 
-/** mpw_log_sink_file is a sink that writes log messages to the mpw_log_cli_file, which defaults to stderr. */
+/** mpw_log_sink_file is a sink that writes log messages to the mpw_log_sink_file, which defaults to stderr. */
 extern MPLogSink mpw_log_sink_file;
 extern FILE *mpw_log_sink_file_target;