diff --git a/liquibase-cli/src/main/java/liquibase/integration/commandline/LiquibaseCommandLine.java b/liquibase-cli/src/main/java/liquibase/integration/commandline/LiquibaseCommandLine.java
index 05f62f98c51..81317a37753 100644
--- a/liquibase-cli/src/main/java/liquibase/integration/commandline/LiquibaseCommandLine.java
+++ b/liquibase-cli/src/main/java/liquibase/integration/commandline/LiquibaseCommandLine.java
@@ -98,7 +98,7 @@ public LiquibaseCommandLine() {
         this.legacyPositionalArguments.put("futurerollbackcountsql", FutureRollbackCountSqlCommandStep.COUNT_ARG.getName());
         this.legacyPositionalArguments.put("futurerollbackfromtagsql", FutureRollbackFromTagSqlCommandStep.TAG_ARG.getName());
         this.legacyPositionalArguments.put("tag", TagCommandStep.TAG_ARG.getName());
-        this.legacyPositionalArguments.put("tagExists", TagExistsCommandStep.TAG_ARG.getName());
+        this.legacyPositionalArguments.put("tagexists", TagExistsCommandStep.TAG_ARG.getName());
         this.legacyPositionalArguments.put("rollback", RollbackCommandStep.TAG_ARG.getName());
         this.legacyPositionalArguments.put("rollbacksql", RollbackSqlCommandStep.TAG_ARG.getName());
         this.legacyPositionalArguments.put("rollbacktodate", RollbackToDateCommandStep.DATE_ARG.getName());