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-rw-r--r--framework/src/suricata/src/util-rule-vars.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/framework/src/suricata/src/util-rule-vars.c b/framework/src/suricata/src/util-rule-vars.c
index f3b5604f..57347f4f 100644
--- a/framework/src/suricata/src/util-rule-vars.c
+++ b/framework/src/suricata/src/util-rule-vars.c
@@ -75,7 +75,7 @@ char *SCRuleVarsGetConfVar(const DetectEngineCtx *de_ctx,
if (conf_var_name == NULL)
goto end;
- while (conf_var_name[0] != '\0' && isspace(conf_var_name[0])) {
+ while (conf_var_name[0] != '\0' && isspace((unsigned char)conf_var_name[0])) {
conf_var_name++;
}