diff --git a/app/build.gradle b/app/build.gradle
index e8902fdd..6584b0d2 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -23,8 +23,8 @@ android {
         testApplicationId "io.github.tests.wulkanowy"
         minSdkVersion 21
         targetSdkVersion 32
-        versionCode 113
-        versionName "1.7.4"
+        versionCode 114
+        versionName "1.7.5"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         resValue "string", "app_name", "Wulkanowy"
@@ -162,7 +162,7 @@ play {
     track = 'production'
 //    releaseStatus = com.github.triplet.gradle.androidpublisher.ReleaseStatus.IN_PROGRESS
 //    userFraction = 0.05d
-    updatePriority = 5
+    updatePriority = 4
     enabled.set(false)
 }
 
@@ -186,7 +186,7 @@ ext {
 }
 
 dependencies {
-    implementation "io.github.wulkanowy:sdk:1.7.4"
+    implementation "io.github.wulkanowy:sdk:1.7.5"
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.8'
 
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/MailboxRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/MailboxRepository.kt
index ad4f669e..c571937a 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/MailboxRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/MailboxRepository.kt
@@ -60,16 +60,18 @@ class MailboxRepository @Inject constructor(
     }
 
     private fun String.normalizeStudentName(): String {
-        return trim().split(" ").joinToString(" ") { part ->
-            part.lowercase().replaceFirstChar { it.uppercase() }
-        }
+        return trim().split(" ")
+            .filter { it.isNotBlank() }
+            .joinToString(" ") { part ->
+                part.lowercase().replaceFirstChar { it.uppercase() }
+            }
     }
 
     private fun String.getFirstAndLastPart(): String {
         val parts = normalizeStudentName().split(" ")
 
         val endParts = parts.filterIndexed { i, _ ->
-            i == 0 || parts.size == i - 1
+            i == 0 || parts.size - 1 == i
         }
         return endParts.joinToString(" ")
     }
diff --git a/app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewAttendanceNotification.kt b/app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewAttendanceNotification.kt
index 49842c9a..99473a8e 100644
--- a/app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewAttendanceNotification.kt
+++ b/app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewAttendanceNotification.kt
@@ -8,7 +8,6 @@ import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.pojos.GroupNotificationData
 import io.github.wulkanowy.data.pojos.NotificationData
 import io.github.wulkanowy.ui.modules.Destination
-import io.github.wulkanowy.ui.modules.splash.SplashActivity
 import io.github.wulkanowy.utils.descriptionRes
 import io.github.wulkanowy.utils.getPlural
 import io.github.wulkanowy.utils.toFormattedString
@@ -22,8 +21,9 @@ class NewAttendanceNotification @Inject constructor(
     suspend fun notify(items: List<Attendance>, student: Student) {
         val lines = items.filterNot { it.presence || it.name == "UNKNOWN" }
             .map {
+                val lesson = it.subject.ifBlank { "Lekcja ${it.number}" }
                 val description = context.getString(it.descriptionRes)
-                "${it.date.toFormattedString("dd.MM")} - ${it.subject}: $description"
+                "${it.date.toFormattedString("dd.MM")} - $lesson: $description"
             }
             .ifEmpty { return }
 
diff --git a/app/src/main/play/release-notes/pl-PL/default.txt b/app/src/main/play/release-notes/pl-PL/default.txt
index 7fe3b709..064401ab 100644
--- a/app/src/main/play/release-notes/pl-PL/default.txt
+++ b/app/src/main/play/release-notes/pl-PL/default.txt
@@ -1,6 +1,7 @@
-Wersja 1.7.4
+Wersja 1.7.5
 
 - naprawiliśmy kilka błędów w obsłudze nowego modułu wiadomości
 - naprawiliśmy wyświetlanie napisu "Brak ocen", jesli uczeń nie zdobył w danym semestrze jeszcze żadnych ocen
+- naprawiliśmy logowanie do aplikacji rodzicom będącym jednocześnie nauczycielami
 
 Pełna lista zmian: https://github.com/wulkanowy/wulkanowy/releases
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/MailboxRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/MailboxRepositoryTest.kt
index 300662f0..9198560f 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/MailboxRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/MailboxRepositoryTest.kt
@@ -91,6 +91,20 @@ class MailboxRepositoryTest {
         assertEquals(expectedMailbox, systemUnderTest.getMailbox(student))
     }
 
+    @Test
+    fun `get mailbox for unique non-authorized student but with spaces`() = runTest {
+        val student = getStudentEntity(
+            userName = "Stanisław Kowalski",
+            studentName = "J**  K*******",
+        )
+        val expectedMailbox = getMailboxEntity("Jan  Kowalski")
+        coEvery { mailboxDao.loadAll(any()) } returns listOf(
+            expectedMailbox,
+        )
+
+        assertEquals(expectedMailbox, systemUnderTest.getMailbox(student))
+    }
+
     @Test(expected = IllegalArgumentException::class)
     fun `get mailbox for not-unique non-authorized student`() = runTest {
         val student = getStudentEntity(