diff --git a/eval4j/src/org/jetbrains/eval4j/interpreter.kt b/eval4j/src/org/jetbrains/eval4j/interpreter.kt
index 1b16ba3820a..4c0d48e3184 100644
--- a/eval4j/src/org/jetbrains/eval4j/interpreter.kt
+++ b/eval4j/src/org/jetbrains/eval4j/interpreter.kt
@@ -63,9 +63,9 @@ class SingleInstructionInterpreter(private val eval: Eval) : Interpreter<Value>(
             LCONST_0 -> long(0)
             LCONST_1 -> long(1)
 
-            FCONST_0 -> float(0.0)
-            FCONST_1 -> float(1.0)
-            FCONST_2 -> float(2.0)
+            FCONST_0 -> float(0.0f)
+            FCONST_1 -> float(1.0f)
+            FCONST_2 -> float(2.0f)
 
             DCONST_0 -> double(0.0)
             DCONST_1 -> double(1.0)
diff --git a/eval4j/src/org/jetbrains/eval4j/interpreterLoop.kt b/eval4j/src/org/jetbrains/eval4j/interpreterLoop.kt
index 626a8c955f1..2abcb795094 100644
--- a/eval4j/src/org/jetbrains/eval4j/interpreterLoop.kt
+++ b/eval4j/src/org/jetbrains/eval4j/interpreterLoop.kt
@@ -12,7 +12,7 @@ import org.jetbrains.org.objectweb.asm.tree.TryCatchBlockNode
 import java.util.ArrayList
 
 trait InterpreterResult {
-    fun toString(): String
+    override fun toString(): String
 }
 
 class ExceptionThrown(val exception: Value): InterpreterResult {
@@ -45,11 +45,11 @@ trait InterpretationEventHandler {
 }
 
 class ThrownFromEvalException(cause: Throwable): RuntimeException(cause) {
-    fun toString(): String = "Thrown by evaluator: ${getCause()}"
+    override fun toString(): String = "Thrown by evaluator: ${getCause()}"
 }
 
 class ThrownFromEvaluatedCodeException(val exception: Value): RuntimeException() {
-    fun toString(): String = "Thrown from evaluated code: $exception"
+    override fun toString(): String = "Thrown from evaluated code: $exception"
 }
 
 fun interpreterLoop(