diff --git a/ChangeLog.md b/ChangeLog.md
index 21fa216c9ca..b618066c50a 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -173,6 +173,7 @@ Issues fixed:
 - [KT-11719](https://youtrack.jetbrains.com/issue/KT-11719) Fixed renaming of Kotlin parameters references in XML files
 - Fix several issues leading to exceptions: [KT-11579](https://youtrack.jetbrains.com/issue/KT-11579), [KT-11580](https://youtrack.jetbrains.com/issue/KT-11580), [KT-11777](https://youtrack.jetbrains.com/issue/KT-11777)
 - Fixed NoSuchFieldException in Kotlin module settings on IDEA Ultimate
+- [KT-11868](https://youtrack.jetbrains.com/issue/KT-11868) Fixed exception on search of functions/constructors with default parameters
 
 #### Debugger
 
diff --git a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt
index 3d345e05870..dbf5dadbb4a 100644
--- a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt
+++ b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt
@@ -89,7 +89,9 @@ fun KtParameter.toPsiParameters(): Collection<PsiParameter> {
                 else -> null
             } ?: return emptyList()
 
-    return methods.map { it.parameterList.parameters[lightParamIndex] }
+    return methods.mapNotNull {
+        if (it.parameterList.parametersCount > lightParamIndex) it.parameterList.parameters[lightParamIndex] else null
+    }
 }
 
 fun KtTypeParameter.toPsiTypeParameters(): List<PsiTypeParameter> {
diff --git a/idea/testData/inspections/unusedSymbol/class/primaryConstructorWithDefaultParam.kt b/idea/testData/inspections/unusedSymbol/class/primaryConstructorWithDefaultParam.kt
new file mode 100644
index 00000000000..709170af613
--- /dev/null
+++ b/idea/testData/inspections/unusedSymbol/class/primaryConstructorWithDefaultParam.kt
@@ -0,0 +1,5 @@
+class Collected(var property: String = "")
+
+fun main(args: Array<String>) {
+    Collected().property = "0"
+}
\ No newline at end of file
diff --git a/idea/testData/inspections/unusedSymbol/function/funWithJvmOverloads.kt b/idea/testData/inspections/unusedSymbol/function/funWithJvmOverloads.kt
new file mode 100644
index 00000000000..416af866969
--- /dev/null
+++ b/idea/testData/inspections/unusedSymbol/function/funWithJvmOverloads.kt
@@ -0,0 +1,8 @@
+import kotlin.jvm.JvmOverloads
+
+@JvmOverloads
+fun foo(s: String = "")
+
+fun main(args: Array<String>) {
+    foo()
+}
\ No newline at end of file