diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt
index f9b1fd2e5b5..2b34b76619a 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inline/SMAP.kt
@@ -21,6 +21,9 @@ import org.jetbrains.kotlin.codegen.ClassBuilder
 import org.jetbrains.kotlin.codegen.SourceInfo
 import java.util.*
 
+val KOTLIN_STRATA_NAME = "Kotlin"
+val KOTLIN_DEBUG_STRATA_NAME = "KotlinDebug"
+
 //TODO join parameter
 class SMAPBuilder(
         val source: String,
@@ -48,7 +51,7 @@ class SMAPBuilder(
     private fun generateDefaultStrata(realMappings: List<FileMapping>): String {
         val fileIds = "*F" + realMappings.mapIndexed { id, file -> "\n${file.toSMAPFile(id + 1)}" }.joinToString("")
         val lineMappings = "*L" + realMappings.joinToString("") { it.toSMAPMapping() }
-        return "*S Kotlin\n$fileIds\n$lineMappings\n*E\n"
+        return "*S $KOTLIN_STRATA_NAME\n$fileIds\n$lineMappings\n*E\n"
     }
 
     private fun generateDebugStrata(realMappings: List<FileMapping>): String {
@@ -66,7 +69,7 @@ class SMAPBuilder(
         val newMappings = listOf(combinedMapping)
         val fileIds = "*F" + newMappings.mapIndexed { id, file -> "\n${file.toSMAPFile(id + 1)}" }.joinToString("")
         val lineMappings = "*L" + newMappings.joinToString("") { it.toSMAPMapping() }
-        return "*S KotlinDebug\n$fileIds\n$lineMappings\n*E\n"
+        return "*S $KOTLIN_DEBUG_STRATA_NAME\n$fileIds\n$lineMappings\n*E\n"
     }
 
     private fun RangeMapping.toSMAP(fileId: Int): String {
diff --git a/idea/src/org/jetbrains/kotlin/idea/debugger/KotlinPositionManager.kt b/idea/src/org/jetbrains/kotlin/idea/debugger/KotlinPositionManager.kt
index 8c82c80eadf..80670a15a72 100644
--- a/idea/src/org/jetbrains/kotlin/idea/debugger/KotlinPositionManager.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/debugger/KotlinPositionManager.kt
@@ -34,6 +34,7 @@ import com.sun.jdi.AbsentInformationException
 import com.sun.jdi.Location
 import com.sun.jdi.ReferenceType
 import com.sun.jdi.request.ClassPrepareRequest
+import org.jetbrains.kotlin.codegen.inline.KOTLIN_STRATA_NAME
 import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil
 import org.jetbrains.kotlin.fileClasses.internalNameWithoutInnerClasses
 import org.jetbrains.kotlin.idea.codeInsight.CodeInsightUtils
@@ -246,7 +247,7 @@ class KotlinPositionManager(private val myDebugProcess: DebugProcess) : MultiReq
         try {
             val line = position.line + 1
             val locations = if (myDebugProcess.virtualMachineProxy.versionHigher("1.4"))
-                type.locationsOfLine("Kotlin", null, line).filter { it.sourceName("Kotlin") == position.file.name }
+                type.locationsOfLine(KOTLIN_STRATA_NAME, null, line).filter { it.sourceName(KOTLIN_STRATA_NAME) == position.file.name }
             else
                 type.locationsOfLine(line)
             if (locations == null || locations.isEmpty()) throw NoDataException.INSTANCE
@@ -273,7 +274,7 @@ class KotlinPositionManager(private val myDebugProcess: DebugProcess) : MultiReq
         }
     }
 
-    private fun ReferenceType.containsKotlinStrata() = availableStrata().contains("Kotlin")
+    private fun ReferenceType.containsKotlinStrata() = availableStrata().contains(KOTLIN_STRATA_NAME)
 }
 
 inline fun <U, V> U.readAction(crossinline f: (U) -> V): V {
diff --git a/idea/src/org/jetbrains/kotlin/idea/debugger/stepping/KotlinSteppingCommandProvider.kt b/idea/src/org/jetbrains/kotlin/idea/debugger/stepping/KotlinSteppingCommandProvider.kt
index 4967bc595ce..b68c2827064 100644
--- a/idea/src/org/jetbrains/kotlin/idea/debugger/stepping/KotlinSteppingCommandProvider.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/debugger/stepping/KotlinSteppingCommandProvider.kt
@@ -27,6 +27,7 @@ import com.intellij.xdebugger.impl.XSourcePositionImpl
 import com.sun.jdi.AbsentInformationException
 import com.sun.jdi.Location
 import org.jetbrains.annotations.TestOnly
+import org.jetbrains.kotlin.codegen.inline.KOTLIN_STRATA_NAME
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.caches.resolve.analyzeFully
 import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
@@ -339,7 +340,7 @@ fun getStepOverPosition(
         }
 
         return try {
-            nextLocation.sourceName("Kotlin") == file.name
+            nextLocation.sourceName(KOTLIN_STRATA_NAME) == file.name
         }
         catch(e: AbsentInformationException) {
             return true