diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/JsLineNumberTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/JsLineNumberTestGenerated.java
index fe7fd587899..2093bb6c102 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/JsLineNumberTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/JsLineNumberTestGenerated.java
@@ -60,6 +60,12 @@ public class JsLineNumberTestGenerated extends AbstractJsLineNumberTest {
         doTest(fileName);
     }
 
+    @TestMetadata("charBoxing.kt")
+    public void testCharBoxing() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/lineNumbers/charBoxing.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("classCapturingLocals.kt")
     public void testClassCapturingLocals() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/lineNumbers/classCapturingLocals.kt");
diff --git a/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/JsAstUtils.java b/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/JsAstUtils.java
index 6235b22ddac..81543c9b629 100644
--- a/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/JsAstUtils.java
+++ b/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/JsAstUtils.java
@@ -159,12 +159,16 @@ public final class JsAstUtils {
 
     @NotNull
     public static JsExpression charToBoxedChar(@NotNull JsExpression expression) {
-        return withBoxingMetadata(invokeKotlinFunction("toBoxedChar", unnestBoxing(expression)));
+        JsInvocation invocation = invokeKotlinFunction("toBoxedChar", unnestBoxing(expression));
+        invocation.setSource(expression.getSource());
+        return withBoxingMetadata(invocation);
     }
 
     @NotNull
     public static JsExpression boxedCharToChar(@NotNull JsExpression expression) {
-        return withBoxingMetadata(invokeKotlinFunction("unboxChar", unnestBoxing(expression)));
+        JsInvocation invocation = invokeKotlinFunction("unboxChar", unnestBoxing(expression));
+        invocation.setSource(expression.getSource());
+        return withBoxingMetadata(invocation);
     }
 
     @NotNull
diff --git a/js/js.translator/testData/lineNumbers/charBoxing.kt b/js/js.translator/testData/lineNumbers/charBoxing.kt
new file mode 100644
index 00000000000..4939a1aa5b3
--- /dev/null
+++ b/js/js.translator/testData/lineNumbers/charBoxing.kt
@@ -0,0 +1,20 @@
+var log = ""
+
+inline fun String.foo(a: String): Int {
+    log += "foo1"
+    return asDynamic().indexOf(a)
+}
+
+inline fun String.foo(a: Char): Int {
+    log += "foo2"
+    return indexOf(a.toString())
+}
+
+fun bar(a: String, b: Char, x: Int) {
+    log += if (x > 0)
+        23
+    else
+        a.foo(b)
+}
+
+// LINES: 6 4 4 5 5 11 9 9 10 10 18 14 14 14 14 14 15 17 9 9 14 10 17 10 14 14 * 1 * 1
\ No newline at end of file