diff --git a/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt b/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt
index 8fc8bfac59..946b7e230f 100644
--- a/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt
+++ b/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt
@@ -211,9 +211,7 @@ fun runGeneration(
         logger.error("Seems like classloader for cut not valid (maybe it was backported to system): ${cut.classLoader}")
     }
 
-    val statsForClass = StatsForClass(Type.getInternalName(cut.classId.jClass))
-
-    val testedClasses = ConcurrentSkipListSet<String>()
+    val statsForClass = StatsForClass()
 
     val codeGenerator = CodeGenerator(
             cut.classId,
@@ -321,17 +319,17 @@ fun runGeneration(
                                     is UtExecution -> {
                                         try {
                                             val testMethodName = testMethodName(method.toString(), ++testsCounter)
-                                            val className = method.clazz.qualifiedName
+                                            val className = Type.getInternalName(method.clazz.java)
                                             logger.debug { "--new testCase collected, to generate: $testMethodName" }
                                             statsForMethod.testsGeneratedCount++
                                             result.coverage?.let {
                                                 statsForClass.updateCoverage(
                                                     newCoverage = it,
-                                                    isNewClass = !testedClasses.contains(className),
+                                                    isNewClass = !statsForClass.testedClassNames.contains(className),
                                                     fromFuzzing = result is UtFuzzedExecution
                                                 )
                                             }
-                                            testedClasses.add(className)
+                                            statsForClass.testedClassNames.add(className)
 
                                             //TODO: it is a strange hack to create fake test case for one [UtResult]
                                             testSets.add(UtMethodTestSet(method, listOf(result)))
diff --git a/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Statistics.kt b/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Statistics.kt
index ab213e0970..a980ab002c 100644
--- a/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Statistics.kt
+++ b/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Statistics.kt
@@ -1,6 +1,7 @@
 package org.utbot.contest
 
 import java.io.File
+import java.util.concurrent.ConcurrentSkipListSet
 import org.utbot.common.MutableMultiset
 import org.utbot.common.mutableMultisetOf
 import org.utbot.framework.plugin.api.Instruction
@@ -48,13 +49,13 @@ class GlobalStats {
         get() = statsForClasses.count { it.failedToCompile }
 
     val coveredInstructions: Int
-        get() = statsForClasses.sumOf { it.coverage.getCoverageInfo(it.className).covered }
+        get() = statsForClasses.sumOf { it.coverage.getCoverageInfo(it.testedClassNames).covered }
 
     val coveredInstructionsByFuzzing: Int
-        get() = statsForClasses.sumOf { it.fuzzedCoverage.getCoverageInfo(it.className).covered }
+        get() = statsForClasses.sumOf { it.fuzzedCoverage.getCoverageInfo(it.testedClassNames).covered }
 
     val coveredInstructionsByConcolic: Int
-        get() = statsForClasses.sumOf { it.concolicCoverage.getCoverageInfo(it.className).covered }
+        get() = statsForClasses.sumOf { it.concolicCoverage.getCoverageInfo(it.testedClassNames).covered }
 
     val totalInstructions: Int
         get() = statsForClasses.sumOf { it.coverage.totalInstructions.toInt() }
@@ -62,7 +63,7 @@ class GlobalStats {
     val avgCoverage: Double
         get() = statsForClasses
             .filter { it.coverage.totalInstructions != 0L }
-            .map { it.coverage.getCoverageInfo(it.className).run { 100.0 * covered / total } }
+            .map { it.coverage.getCoverageInfo(it.testedClassNames).run { 100.0 * covered / total } }
             .average().run {
                 if (isNaN()) 0.0
                 else this
@@ -108,7 +109,9 @@ class GlobalStats {
             avgCoverage.format(PRECISION) + " %"
 }
 
-class StatsForClass(val className: String) {
+class StatsForClass {
+    val testedClassNames: MutableSet<String> = ConcurrentSkipListSet()
+
     var methodsCount: Int = -1
     val statsForMethods = mutableListOf<StatsForMethod>()
 
@@ -123,8 +126,15 @@ class StatsForClass(val className: String) {
     var fuzzedCoverage = CoverageInstructionsSet()
     var concolicCoverage = CoverageInstructionsSet()
 
+    /**
+     * Add class [className] to respect coverage from this class.
+     */
+    fun addTestedClass(className: String) {
+        testedClassNames.add(className)
+    }
+
     private fun CoverageInstructionsSet.prettyInfo(): String =
-        getCoverageInfo(className).run { "$covered/$total" }
+        getCoverageInfo(testedClassNames).run { "$covered/$total" }
 
     override fun toString(): String = "\n<StatsForClass> :" +
             "\n\tcanceled by timeout = $canceledByTimeout" +
@@ -191,12 +201,12 @@ data class CoverageInstructionsSet(
 data class CoverageStatistic(val covered: Int, val total: Int)
 
 /**
- * Compute coverage of class named [className] with its anonymous, nested and inner classes.
+ * Compute coverage of classes with names in [classNames].
  */
-private fun CoverageInstructionsSet?.getCoverageInfo(className: String): CoverageStatistic = this?.run {
+private fun CoverageInstructionsSet?.getCoverageInfo(classNames: Set<String>): CoverageStatistic = this?.run {
     CoverageStatistic(
         coveredInstructions.filter {
-            instr -> instr.className.startsWith(className)
+            instr -> classNames.contains(instr.className)
         }.toSet().size,
         totalInstructions.toInt()
     )