diff --git a/core/model/src/commonMain/kotlin/io/github/droidkaigi/confsched/model/ProfileCard.kt b/core/model/src/commonMain/kotlin/io/github/droidkaigi/confsched/model/ProfileCard.kt
index 707457439..8b800f00c 100644
--- a/core/model/src/commonMain/kotlin/io/github/droidkaigi/confsched/model/ProfileCard.kt
+++ b/core/model/src/commonMain/kotlin/io/github/droidkaigi/confsched/model/ProfileCard.kt
@@ -23,14 +23,14 @@ data class ImageData internal constructor(
     val image: String,
     val imageBase64: ByteArray,
 ) {
+    private val imageHash: Int = imageBase64.contentHashCode()
+
     constructor(image: String) : this(image, image.decodeBase64Bytes())
     constructor(imageBase64: ByteArray) : this(imageBase64.toBase64(), imageBase64)
 
-    private val imageHash: Int = imageBase64.contentHashCode()
-
     override fun equals(other: Any?): Boolean {
-        return this === other
-            || other is ImageData && imageHash == other.imageHash
+        return this === other ||
+            other is ImageData && imageHash == other.imageHash
     }
 
     override fun hashCode(): Int {
diff --git a/feature/profilecard/src/commonMain/kotlin/io/github/droidkaigi/confsched/profilecard/ProfileCardScreen.kt b/feature/profilecard/src/commonMain/kotlin/io/github/droidkaigi/confsched/profilecard/ProfileCardScreen.kt
index 31bf3ee86..90e66a4de 100644
--- a/feature/profilecard/src/commonMain/kotlin/io/github/droidkaigi/confsched/profilecard/ProfileCardScreen.kt
+++ b/feature/profilecard/src/commonMain/kotlin/io/github/droidkaigi/confsched/profilecard/ProfileCardScreen.kt
@@ -41,8 +41,6 @@ import androidx.compose.material3.Text
 import androidx.compose.material3.TextFieldDefaults.indicatorLine
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.derivedStateOf
-import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -134,30 +132,46 @@ internal sealed interface ProfileCardUiState {
         val imageData: ImageData? = null,
         val theme: ProfileCardTheme = ProfileCardTheme.Iguana,
     ) : ProfileCardUiState {
-        val nicknameError @Composable get() = if (nickname.isEmpty()) stringResource(
-            ProfileCardRes.string.enter_validate_format,
-            stringResource(ProfileCardRes.string.nickname),
-        ) else ""
-
-        val occupationError @Composable get() = if (occupation.isEmpty()) stringResource(
-            ProfileCardRes.string.enter_validate_format,
-            stringResource(ProfileCardRes.string.occupation),
-        ) else ""
-
-        val linkError @Composable get() = if (link.isEmpty()) stringResource(
-            ProfileCardRes.string.enter_validate_format,
-            stringResource(ProfileCardRes.string.occupation),
-        ) else ""
-
-        val imageError @Composable get() = if (imageData == null) stringResource(
-            ProfileCardRes.string.add_validate_format,
-            stringResource(ProfileCardRes.string.image),
-        ) else ""
-
-        val isValidInputs = nickname.isNotEmpty()
-            && occupation.isNotEmpty()
-            && link.isNotEmpty()
-            && imageData != null
+        val nicknameError @Composable get() = if (nickname.isEmpty()) {
+            stringResource(
+                ProfileCardRes.string.enter_validate_format,
+                stringResource(ProfileCardRes.string.nickname),
+            )
+        } else {
+            ""
+        }
+
+        val occupationError @Composable get() = if (occupation.isEmpty()) {
+            stringResource(
+                ProfileCardRes.string.enter_validate_format,
+                stringResource(ProfileCardRes.string.occupation),
+            )
+        } else {
+            ""
+        }
+
+        val linkError @Composable get() = if (link.isEmpty()) {
+            stringResource(
+                ProfileCardRes.string.enter_validate_format,
+                stringResource(ProfileCardRes.string.occupation),
+            )
+        } else {
+            ""
+        }
+
+        val imageError @Composable get() = if (imageData == null) {
+            stringResource(
+                ProfileCardRes.string.add_validate_format,
+                stringResource(ProfileCardRes.string.image),
+            )
+        } else {
+            ""
+        }
+
+        val isValidInputs = nickname.isNotEmpty() &&
+            occupation.isNotEmpty() &&
+            link.isNotEmpty() &&
+            imageData != null
     }
 
     data class Card(
@@ -341,7 +355,7 @@ internal fun EditScreen(
 
                 ThemePiker(
                     selectedTheme = uiState.theme,
-                    onClickImage = { onUpdateEditingState(uiState.copy(theme = it)) }
+                    onClickImage = { onUpdateEditingState(uiState.copy(theme = it)) },
                 )
 
                 Button(