diff --git a/NEWS b/NEWS
index 9ab884ee430..f1909fda442 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,8 @@ PHP                                                                        NEWS
   . Removed the pdo_odbc.db2_instance_name php.ini directive. (Kalle)
   . Fixed bug #77619 (Wrong reflection on MultipleIterator::__construct).
     (Fabien Villepinte)
+  . Fixed bug #65274 (Enhance undefined class constant error with class name).
+    (Nikita)
 
 - Date:
   . Fixed bug #65547 (Default value for sunrise/sunset zenith still wrong).
diff --git a/Zend/tests/class_constants_001.phpt b/Zend/tests/class_constants_001.phpt
index f36b1af9f62..484157fe4b9 100644
--- a/Zend/tests/class_constants_001.phpt
+++ b/Zend/tests/class_constants_001.phpt
@@ -19,7 +19,7 @@ echo "Done\n";
 string(6) "string"
 int(1)
 
-Fatal error: Uncaught Error: Undefined class constant 'val3' in %s:%d
+Fatal error: Uncaught Error: Undefined class constant 'test::val3' in %s:%d
 Stack trace:
 #0 {main}
   thrown in %s on line %d
diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index c38499d9723..608d24f5080 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -5485,7 +5485,8 @@ ZEND_VM_HANDLER(181, ZEND_FETCH_CLASS_CONSTANT, VAR|CONST|UNUSED|CLASS_FETCH, CO
 			}
 			CACHE_POLYMORPHIC_PTR(opline->extended_value, ce, value);
 		} else {
-			zend_throw_error(NULL, "Undefined class constant '%s'", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
+			zend_throw_error(NULL, "Undefined class constant '%s::%s'",
+				ZSTR_VAL(ce->name), Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 			HANDLE_EXCEPTION();
 		}
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index c5a429a9e3b..3940598619a 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -5957,7 +5957,8 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_FETCH_CLASS_CONSTANT_SPEC_CONS
 			}
 			CACHE_POLYMORPHIC_PTR(opline->extended_value, ce, value);
 		} else {
-			zend_throw_error(NULL, "Undefined class constant '%s'", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
+			zend_throw_error(NULL, "Undefined class constant '%s::%s'",
+				ZSTR_VAL(ce->name), Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 			HANDLE_EXCEPTION();
 		}
@@ -22760,7 +22761,8 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_FETCH_CLASS_CONSTANT_SPEC_VAR_
 			}
 			CACHE_POLYMORPHIC_PTR(opline->extended_value, ce, value);
 		} else {
-			zend_throw_error(NULL, "Undefined class constant '%s'", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
+			zend_throw_error(NULL, "Undefined class constant '%s::%s'",
+				ZSTR_VAL(ce->name), Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 			HANDLE_EXCEPTION();
 		}
@@ -30698,7 +30700,8 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_FETCH_CLASS_CONSTANT_SPEC_UNUS
 			}
 			CACHE_POLYMORPHIC_PTR(opline->extended_value, ce, value);
 		} else {
-			zend_throw_error(NULL, "Undefined class constant '%s'", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
+			zend_throw_error(NULL, "Undefined class constant '%s::%s'",
+				ZSTR_VAL(ce->name), Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 			HANDLE_EXCEPTION();
 		}
diff --git a/tests/classes/constants_basic_001.phpt b/tests/classes/constants_basic_001.phpt
index af9915c2775..796c8d559eb 100644
--- a/tests/classes/constants_basic_001.phpt
+++ b/tests/classes/constants_basic_001.phpt
@@ -79,7 +79,7 @@ string(6) "hello2"
 
 Expecting fatal error:
 
-Fatal error: Uncaught Error: Undefined class constant 'c19' in %s:%d
+Fatal error: Uncaught Error: Undefined class constant 'C::c19' in %s:%d
 Stack trace:
 #0 {main}
   thrown in %s on line %d
diff --git a/tests/classes/constants_visibility_004.phpt b/tests/classes/constants_visibility_004.phpt
index 93acacf3c90..983b2e247b1 100644
--- a/tests/classes/constants_visibility_004.phpt
+++ b/tests/classes/constants_visibility_004.phpt
@@ -21,7 +21,7 @@ B::checkConstants();
 int(1)
 int(2)
 
-Fatal error: Uncaught Error: Undefined class constant 'Z' in %s:11
+Fatal error: Uncaught Error: Undefined class constant 'B::Z' in %s:11
 Stack trace:
 #0 %s(15): B::checkConstants()
 #1 {main}