diff --git a/src/test/kotlin/roomescape/theme/ThemeApiTest.kt b/src/test/kotlin/roomescape/theme/ThemeApiTest.kt
index 46197b79..d397f659 100644
--- a/src/test/kotlin/roomescape/theme/ThemeApiTest.kt
+++ b/src/test/kotlin/roomescape/theme/ThemeApiTest.kt
@@ -480,6 +480,26 @@ class ThemeApiTest(
                 }
             }
 
+            test("입력값이 없으면 수정하지 않는다.") {
+                runTest(
+                    token = loginUtil.loginAsAdmin(),
+                    using = {
+                        body(ThemeUpdateRequest())
+                    },
+                    on = {
+                        patch(apiPath)
+                    },
+                    expect = {
+                        statusCode(HttpStatus.OK.value())
+                    }
+                ).also {
+                    val updatedTheme = themeRepository.findByIdOrNull(createdTheme.id)!!
+
+                    updatedTheme.id shouldBe createdTheme.id
+                    updatedTheme.updatedAt shouldBe createdTheme.updatedAt
+                }
+            }
+
             test("테마가 없으면 실패한다.") {
                 runTest(
                     token = token,