diff --git a/src/util/log.c b/src/util/log.c
index 5f3d053..1c59f81 100644
--- a/src/util/log.c
+++ b/src/util/log.c
@@ -5,6 +5,8 @@
 #include <string.h>
 #include <pthread.h>
 
+static const char* const PREFIX_SEPARATOR = "/";
+
 struct log_port;
 
 struct log {
@@ -51,8 +53,8 @@ struct log* log_derived(struct log* parent, const char* child_suffix)
     return make_log(
         parent->derive_rgn,
         rsprintf(parent->tmp_str_rgn,
-                 "%s::%s",
-                 parent->prefix, child_suffix),
+                 "%s%s%s",
+                 parent->prefix, PREFIX_SEPARATOR, child_suffix),
         parent->port);
 }
 
@@ -95,8 +97,7 @@ void log_writeln(struct log* lg, const char* str)
 {
     pthread_mutex_lock(&lg->port->mx);
     if (lg->port->file) {
-        int pad = lg->port->padding - strlen(lg->prefix);
-        fprintf(lg->port->file, "%*s[%s] %s\n", pad, "", lg->prefix, str);
+        fprintf(lg->port->file, "%*s | %s\n", (int) lg->port->padding, lg->prefix, str);
         fflush(lg->port->file);
     }
     pthread_mutex_unlock(&lg->port->mx);