diff --git a/tools/command.c b/tools/command.c
index afd88316a..c094f124d 100644
--- a/tools/command.c
+++ b/tools/command.c
@@ -2279,6 +2279,7 @@ static void print_val_man(struct command_name *cname, int opt_enum, int val_enum
 			else
 				printf("\\fB%s\\fP", line_argv[i]);
 		}
+		dm_free(line);
 		return;
 	}