diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index 57cd54074af..6f3de90a62e 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -4943,7 +4943,7 @@ ZEND_VM_HANDLER(144, ZEND_ADD_INTERFACE, ANY, CONST)
 			CHECK_EXCEPTION();
 			ZEND_VM_NEXT_OPCODE();
 		}
-		CACHE_PTR(opline->op2.literal->cache_slot, ce);
+		CACHE_PTR(opline->op2.literal->cache_slot, iface);
 	}
 
 	if (UNEXPECTED((iface->ce_flags & ZEND_ACC_INTERFACE) == 0)) {
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index cd28387271c..67f8ad10ff4 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -1483,7 +1483,7 @@ static int ZEND_FASTCALL  ZEND_ADD_INTERFACE_SPEC_CONST_HANDLER(ZEND_OPCODE_HAND
 			CHECK_EXCEPTION();
 			ZEND_VM_NEXT_OPCODE();
 		}
-		CACHE_PTR(opline->op2.literal->cache_slot, ce);
+		CACHE_PTR(opline->op2.literal->cache_slot, iface);
 	}
 
 	if (UNEXPECTED((iface->ce_flags & ZEND_ACC_INTERFACE) == 0)) {