diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProvider.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProvider.kt
index 36c3c4f8..7e9b56b9 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProvider.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProvider.kt
@@ -86,7 +86,11 @@ class GradeAverageProvider @Inject constructor(
                 return@combine firstSemesterGradeSubject
             }
 
-            val isAnyAverage = secondSemesterGradeSubject.data.orEmpty().any { it.average != .0 }
+            val isAnyVulcanAverageInFirstSemester =
+                firstSemesterGradeSubject.data.orEmpty().any { it.average != .0 }
+            val isAnyVulcanAverageInSecondSemester =
+                secondSemesterGradeSubject.data.orEmpty().any { it.average != .0 }
+
             val updatedData = secondSemesterGradeSubject.data?.map { secondSemesterSubject ->
                 val firstSemesterSubject = firstSemesterGradeSubject.data.orEmpty()
                     .singleOrNull { it.subject == secondSemesterSubject.subject }
@@ -94,7 +98,7 @@ class GradeAverageProvider @Inject constructor(
                 val updatedAverage = if (averageMode == ALL_YEAR) {
                     calculateAllYearAverage(
                         student = student,
-                        isAnyAverage = isAnyAverage,
+                        isAnyVulcanAverage = isAnyVulcanAverageInFirstSemester || isAnyVulcanAverageInSecondSemester,
                         gradeAverageForceCalc = gradeAverageForceCalc,
                         secondSemesterSubject = secondSemesterSubject,
                         firstSemesterSubject = firstSemesterSubject
@@ -102,7 +106,7 @@ class GradeAverageProvider @Inject constructor(
                 } else {
                     calculateBothSemestersAverage(
                         student = student,
-                        isAnyAverage = isAnyAverage,
+                        isAnyVulcanAverage = isAnyVulcanAverageInFirstSemester || isAnyVulcanAverageInSecondSemester,
                         gradeAverageForceCalc = gradeAverageForceCalc,
                         secondSemesterSubject = secondSemesterSubject,
                         firstSemesterSubject = firstSemesterSubject
@@ -116,11 +120,11 @@ class GradeAverageProvider @Inject constructor(
 
     private fun calculateAllYearAverage(
         student: Student,
-        isAnyAverage: Boolean,
+        isAnyVulcanAverage: Boolean,
         gradeAverageForceCalc: Boolean,
         secondSemesterSubject: GradeSubject,
         firstSemesterSubject: GradeSubject?
-    ) = if (!isAnyAverage || gradeAverageForceCalc) {
+    ) = if (!isAnyVulcanAverage || gradeAverageForceCalc) {
         val updatedSecondSemesterGrades =
             secondSemesterSubject.grades.updateModifiers(student)
         val updatedFirstSemesterGrades =
@@ -133,20 +137,23 @@ class GradeAverageProvider @Inject constructor(
 
     private fun calculateBothSemestersAverage(
         student: Student,
-        isAnyAverage: Boolean,
+        isAnyVulcanAverage: Boolean,
         gradeAverageForceCalc: Boolean,
         secondSemesterSubject: GradeSubject,
         firstSemesterSubject: GradeSubject?
-    ) = if (!isAnyAverage || gradeAverageForceCalc) {
-        val secondSemesterAverage =
-            secondSemesterSubject.grades.updateModifiers(student).calcAverage()
-        val firstSemesterAverage = firstSemesterSubject?.grades?.updateModifiers(student)
-            ?.calcAverage() ?: secondSemesterAverage
+    ): Double {
         val divider = if (secondSemesterSubject.grades.any { it.weightValue > .0 }) 2 else 1
 
-        (secondSemesterAverage + firstSemesterAverage) / divider
-    } else {
-        (secondSemesterSubject.average + (firstSemesterSubject?.average ?: secondSemesterSubject.average)) / 2
+        return if (!isAnyVulcanAverage || gradeAverageForceCalc) {
+            val secondSemesterAverage =
+                secondSemesterSubject.grades.updateModifiers(student).calcAverage()
+            val firstSemesterAverage = firstSemesterSubject?.grades?.updateModifiers(student)
+                ?.calcAverage() ?: secondSemesterAverage
+
+            (secondSemesterAverage + firstSemesterAverage) / divider
+        } else {
+            (secondSemesterSubject.average + (firstSemesterSubject?.average ?: secondSemesterSubject.average)) / divider
+        }
     }
 
     private fun getGradeSubjects(
diff --git a/app/src/test/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProviderTest.kt b/app/src/test/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProviderTest.kt
index 0da02cf5..f3d92d2e 100644
--- a/app/src/test/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProviderTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/ui/modules/grade/GradeAverageProviderTest.kt
@@ -198,6 +198,19 @@ class GradeAverageProviderTest {
         assertEquals(3.5, items.single { it.subject == "Język polski" }.average, .0)
     }
 
+    @Test
+    fun `calc both semesters average with no grade in second semester but with average in first semester`() {
+        every { preferencesRepository.gradeAverageForceCalc } returns false
+        every { preferencesRepository.gradeAverageMode } returns GradeAverageMode.BOTH_SEMESTERS
+
+        coEvery { gradeRepository.getGrades(student, semesters[1], false) } returns flowWithResource { secondGradeWithModifier to secondSummariesWithModifier }
+        coEvery { gradeRepository.getGrades(student, semesters[2], false) } returns flowWithResource { emptyList<Grade>() to listOf(getSummary(24, "Język polski", .0))}
+
+        val items = runBlocking { gradeAverageProvider.getGradesDetailsWithAverage(student, semesters[2].semesterId, false).getResult() }
+
+        assertEquals(3.49, items.single { it.subject == "Język polski" }.average, .0)
+    }
+
     @Test
     fun `force calc average on no grades`() {
         every { preferencesRepository.gradeAverageForceCalc } returns true
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 1c4bcc29..25d32653 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.2-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists