diff --git a/zpa-core/src/main/kotlin/org/sonar/plugins/plsqlopen/api/matchers/MethodMatcher.kt b/zpa-core/src/main/kotlin/org/sonar/plugins/plsqlopen/api/matchers/MethodMatcher.kt
index b1a5e281..8a98b39c 100644
--- a/zpa-core/src/main/kotlin/org/sonar/plugins/plsqlopen/api/matchers/MethodMatcher.kt
+++ b/zpa-core/src/main/kotlin/org/sonar/plugins/plsqlopen/api/matchers/MethodMatcher.kt
@@ -105,7 +105,7 @@ class MethodMatcher private constructor()
         var i = -1
         val nodes = arrayOfNulls<String>(3)
         for (child in node.children) {
-            if (i < 2 && child.type === PlSqlGrammar.VARIABLE_NAME || child.type === PlSqlGrammar.IDENTIFIER_NAME) {
+            if (i < 2 && (child.type === PlSqlGrammar.VARIABLE_NAME || child.type === PlSqlGrammar.IDENTIFIER_NAME)) {
                 nodes[++i] = child.tokenOriginalValue
             }
         }