diff --git a/src/common/backtrace.c b/src/common/backtrace.c
index 3db2d6c235..239c65782b 100644
--- a/src/common/backtrace.c
+++ b/src/common/backtrace.c
@@ -49,7 +49,7 @@ static char *bt_version = NULL;
 /** Static allocation of stack to dump. This is static so we avoid stack
  * pressure. */
 static void *cb_buf[MAX_DEPTH];
-/** Protects cb_buf_mutex from concurrent access */
+/** Protects cb_buf from concurrent access */
 static tor_mutex_t cb_buf_mutex;
 
 /** Change a stacktrace in <b>stack</b> of depth <b>depth</b> so that it will