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-rw-r--r--cfgparser.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/cfgparser.c b/cfgparser.c
index 7886d0d9de..e932931842 100644
--- a/cfgparser.c
+++ b/cfgparser.c
@@ -141,7 +141,7 @@ static int read_option(char *opt, char *param)
case CONF_TYPE_FLOAT:
if (param == NULL)
goto err_missing_param;
- if (!isdigit(*param)) {
+ if (!isdigit(*param) && *param != '-' && *param != '.') {
printf("parameter must be a floating point number:\n");
ret = ERR_MISSING_PARAM;
goto out;