diff --git a/src/main/java/org/casbin/jcasbin/main/CoreEnforcer.java b/src/main/java/org/casbin/jcasbin/main/CoreEnforcer.java
index ec3c7ace..60d88e9a 100644
--- a/src/main/java/org/casbin/jcasbin/main/CoreEnforcer.java
+++ b/src/main/java/org/casbin/jcasbin/main/CoreEnforcer.java
@@ -42,9 +42,6 @@
 import java.util.function.BiPredicate;
 import java.util.function.Function;
 
-import static org.casbin.jcasbin.util.Util.hasEval;
-import static org.casbin.jcasbin.util.Util.splitCommaDelimitedList;
-
 /**
  * CoreEnforcer defines the core functionality of an enforcer.
  */
@@ -583,7 +580,6 @@ private EnforceResult enforce(String matcher, Object... rvals) {
         } else {
             expString = Util.removeComments(Util.escapeAssertion(matcher));
         }
-        boolean hasEval = hasEval(expString);
 
         // json process
         if (acceptJsonRequest) {
@@ -633,9 +629,6 @@ private EnforceResult enforce(String matcher, Object... rvals) {
 
             for (int i = 0; i < policy.size(); i++) {
                 List<String> pvals = policy.get(i);
-                if (hasEval) {
-                    pvals = splitCommaDelimitedList(pvals);
-                }
                 Map<String, Object> parameters = new HashMap<>(rvals.length + pTokens.length);
                 getPTokens(parameters, pType, pvals, pTokens);
                 getRTokens(parameters, rType, rvals);
diff --git a/src/main/java/org/casbin/jcasbin/util/Util.java b/src/main/java/org/casbin/jcasbin/util/Util.java
index 6f739025..4077ee18 100644
--- a/src/main/java/org/casbin/jcasbin/util/Util.java
+++ b/src/main/java/org/casbin/jcasbin/util/Util.java
@@ -284,21 +284,6 @@ public static String[] splitCommaDelimited(String s) {
         return records;
     }
 
-    /**
-     * splits each string in the given list by commas according to CSV format
-     * and removes any extra double quotes
-     * @param rule the rule to be modified
-     * @return the modified rule
-     */
-    public static List<String> splitCommaDelimitedList(List<String> rule) {
-        List<String> modifiedRule = new ArrayList<>();
-        for (String s : rule) {
-            String[] strings = splitCommaDelimited(s);
-            modifiedRule.add(strings[0]);
-        }
-        return modifiedRule;
-    }
-
     /**
      * setEquals determines whether two string sets are identical.
      *
@@ -329,7 +314,7 @@ public static boolean setEquals(List<String> a, List<String> b) {
     }
 
     public static boolean hasEval(String exp) {
-        return evalReg.matcher(exp).find();
+        return evalReg.matcher(exp).matches();
     }
 
     public static String replaceEval(String s, String replacement) {
diff --git a/src/test/java/org/casbin/jcasbin/main/AbacAPIUnitTest.java b/src/test/java/org/casbin/jcasbin/main/AbacAPIUnitTest.java
index 7a252eb0..d0f8a65b 100644
--- a/src/test/java/org/casbin/jcasbin/main/AbacAPIUnitTest.java
+++ b/src/test/java/org/casbin/jcasbin/main/AbacAPIUnitTest.java
@@ -14,10 +14,8 @@
 
 package org.casbin.jcasbin.main;
 
+import org.casbin.jcasbin.util.Util;
 import org.junit.Test;
-
-import java.util.ArrayList;
-import java.util.List;
 import java.util.Map;
 import java.util.HashMap;
 
@@ -44,15 +42,6 @@ public void testEval() {
         alice.setAge(60);
         testEnforce(e, alice, "/data2", "read", false);
         testEnforce(e, alice, "/data2", "write", false);
-
-        List<String> rule = new ArrayList<>();
-        rule.add("\"r.sub.name == 'alice,green'\"");
-        rule.add("data1");
-        rule.add("read");
-        e.addPolicy(rule);
-
-        TestEvalRule aliceGreen = new TestEvalRule("alice,green", 18);
-        testEnforce(e, aliceGreen, "data1", "read", true);
     }
 
     @Test
diff --git a/src/test/java/org/casbin/jcasbin/main/UtilTest.java b/src/test/java/org/casbin/jcasbin/main/UtilTest.java
index 187951fd..545bc373 100644
--- a/src/test/java/org/casbin/jcasbin/main/UtilTest.java
+++ b/src/test/java/org/casbin/jcasbin/main/UtilTest.java
@@ -27,7 +27,6 @@
 import java.io.IOException;
 import java.io.StringReader;
 
-import static org.casbin.jcasbin.util.Util.hasEval;
 import static org.junit.Assert.*;
 import static org.mockito.ArgumentMatchers.*;
 
@@ -85,13 +84,6 @@ public void testSplitCommaDelimited(){
     assertArrayEquals(new String[]{"a b", "c", "d"}, Util.splitCommaDelimited("\"a b\", c, d"));
   }
 
-  @Test
-  public void testHasEval() {
-      assertTrue(hasEval("eval(test)"));
-      assertTrue(hasEval("r_act == p_act && eval(p_sub_rule) && eval(p_obj_rule)"));
-      assertFalse(hasEval("evaltest"));
-  }
-
   @Test
   public void testReplaceEval() {
       Util.logPrint(Util.replaceEval("eval(test)", "testEval"));