diff --git a/res/res_monitor.c b/res/res_monitor.c
index e00b7c5b02..ce2dbdca92 100644
--- a/res/res_monitor.c
+++ b/res/res_monitor.c
@@ -315,8 +315,8 @@ int AST_OPTIONAL_API_NAME(ast_monitor_start)(struct ast_channel *chan, const cha
 						directory ? "" : ast_config_AST_MONITOR_DIR, absolute, fname_base);
 			snprintf(monitor->write_filename, FILENAME_MAX, "%s%s%s-out",
 						directory ? "" : ast_config_AST_MONITOR_DIR, absolute, fname_base);
-			snprintf(monitor->filename_base, FILENAME_MAX, "%s/%s",
-					 ast_config_AST_MONITOR_DIR, fname_base);
+			snprintf(monitor->filename_base, FILENAME_MAX, "%s%s%s",
+					 	directory ? "" : ast_config_AST_MONITOR_DIR, absolute, fname_base);
 		} else {
 			ast_mutex_lock(&monitorlock);
 			snprintf(monitor->read_filename, FILENAME_MAX, "%s/audio-in-%ld",