diff --git a/tools/flye/flye.rule.snakefile b/tools/flye/flye.rule.snakefile
index 3f6d9848c3a7ed1703afd957fdf7c8acf6e7f72a..9aaff3acac47599f7b6d7b7dc3e51dfccf70a521 100755
--- a/tools/flye/flye.rule.snakefile
+++ b/tools/flye/flye.rule.snakefile
@@ -8,7 +8,7 @@ rule <step_name>__flye:
         command = config["<step_name>__flye_command"],
         output_dir = config["results_dir"] + "/" + config["<step_name>__flye_output_dir"]+ "/",
         pacbio_oxfordNanopore = config["<step_name>__flye_pacbio_oxfordNanopore"],
-        scaffold = "--scaffold" if config["<step_name>__flye_scaffold"], else "", 
+        scaffold = "--scaffold" if config["<step_name>__flye_scaffold"] else "", 
         keep_haplotypes = "--keep-haplotypes" if config["<step_name>__flye_keep_haplotypes"] else "",
     log: 
         config["results_dir"] + "/logs/" + config["<step_name>__flye_output_dir"] + "/flye_log.txt"