diff --git a/src/main/java/com/powersupply/PES/domain/dto/ManageDTO.java b/src/main/java/com/powersupply/PES/domain/dto/ManageDTO.java
index 6ce2999..0fe2a20 100644
--- a/src/main/java/com/powersupply/PES/domain/dto/ManageDTO.java
+++ b/src/main/java/com/powersupply/PES/domain/dto/ManageDTO.java
@@ -32,7 +32,7 @@ public static class ProblemDetail {
         private String problemTitle;
         private int problemScore;
         private String context;
-        private int sample;
+        private Integer sample;
         private String inputs;
         private String outputs;
 
@@ -55,7 +55,7 @@ public static class ProblemRequestDto {
         private String problemTitle;
         private int problemScore;
         private String context;
-        private int sample;
+        private Integer sample;
         private String inputs;
         private String outputs;
     }