diff --git a/idea/src/org/jetbrains/jet/plugin/completion/DescriptorLookupConverter.java b/idea/src/org/jetbrains/jet/plugin/completion/DescriptorLookupConverter.java
index bdb93e3c77a..1cbd030d2f5 100644
--- a/idea/src/org/jetbrains/jet/plugin/completion/DescriptorLookupConverter.java
+++ b/idea/src/org/jetbrains/jet/plugin/completion/DescriptorLookupConverter.java
@@ -67,7 +67,7 @@ public final class DescriptorLookupConverter {
             boolean extensionFunction = functionDescriptor.getReceiverParameter().exists();
             DeclarationDescriptor containingDeclaration = descriptor.getContainingDeclaration();
             if (extensionFunction && containingDeclaration != null) {
-                tailText += " defined in " + DescriptorUtils.getFQName(containingDeclaration);
+                tailText += " in " + DescriptorUtils.getFQName(containingDeclaration);
             }
 
             // TODO: A special case when it's impossible to resolve type parameters from arguments. Need '<' caret '>'
diff --git a/idea/testData/completion/basic/ExtensionFromStandardLibrary.kt b/idea/testData/completion/basic/ExtensionFromStandardLibrary.kt
index 04ed314f532..a4899e09f37 100644
--- a/idea/testData/completion/basic/ExtensionFromStandardLibrary.kt
+++ b/idea/testData/completion/basic/ExtensionFromStandardLibrary.kt
@@ -9,6 +9,6 @@ fun firstFun() {
 
 // RUNTIME: 1
 // TIME: 1
-// EXIST: toLinkedList~() defined in kotlin
-// EXIST: toLinkedList~() defined in kotlin.nullable
+// EXIST: toLinkedList~() in kotlin
+// EXIST: toLinkedList~() in kotlin.nullable
 // NUMBER: 2
\ No newline at end of file