diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.java b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt
similarity index 100%
rename from compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.java
rename to compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt
diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonToolArguments.java b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonToolArguments.kt
similarity index 100%
rename from compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonToolArguments.java
rename to compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonToolArguments.kt
diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.java b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt
similarity index 100%
rename from compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.java
rename to compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt
diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSDceArguments.java b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSDceArguments.kt
similarity index 100%
rename from compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSDceArguments.java
rename to compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSDceArguments.kt
diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.java b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt
similarity index 100%
rename from compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.java
rename to compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt
diff --git a/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2MetadataCompilerArguments.java b/compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2MetadataCompilerArguments.kt
similarity index 100%
rename from compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2MetadataCompilerArguments.java
rename to compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2MetadataCompilerArguments.kt