diff --git a/salt/common/tools/sbin/so-log-check b/salt/common/tools/sbin/so-log-check
index b1a64770d..d3bcff1fa 100755
--- a/salt/common/tools/sbin/so-log-check
+++ b/salt/common/tools/sbin/so-log-check
@@ -169,6 +169,7 @@ if [[ $EXCLUDE_FALSE_POSITIVE_ERRORS == 'Y' ]]; then
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|Error while parsing document for index \[.ds-logs-kratos-so-.*object mapping for \[file\]" # false positive (mapping error occuring BEFORE kratos index has rolled over in 2.4.210)
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|No such container"            # false positive (telegraf trying to run stats on an old container)
     EXCLUDED_ERRORS="$EXCLUDED_ERRORS|passwords do not match"       # false positive (automated hydra test)
+    EXCLUDED_ERRORS="$EXCLUDED_ERRORS|Request did not pass preprocessing" # expected WARN log lines
 fi
 
 if [[ $EXCLUDE_KNOWN_ERRORS == 'Y' ]]; then