diff --git a/pmd-lang-test/src/main/kotlin/net/sourceforge/pmd/lang/ast/test/BaseParsingHelper.kt b/pmd-lang-test/src/main/kotlin/net/sourceforge/pmd/lang/ast/test/BaseParsingHelper.kt
index fa812f1f7b..a9d789d0c7 100644
--- a/pmd-lang-test/src/main/kotlin/net/sourceforge/pmd/lang/ast/test/BaseParsingHelper.kt
+++ b/pmd-lang-test/src/main/kotlin/net/sourceforge/pmd/lang/ast/test/BaseParsingHelper.kt
@@ -243,7 +243,7 @@ abstract class BaseParsingHelper<Self : BaseParsingHelper<Self, T>, T : RootNode
         return PmdAnalysis.create(config).use { pmd ->
             pmd.addListener(GlobalAnalysisListener.exceptionThrower())
             pmd.addRuleSet(RuleSet.forSingleRule(rule))
-            pmd.files().addSourceFile(code, fileName)
+            pmd.files().addSourceFile(fileName, code)
             pmd.performAnalysisAndCollectReport()
         }
     }