diff --git a/python/src/com/jetbrains/python/codeInsight/stdlib/PyStdlibModuleMembersProvider.java b/python/src/com/jetbrains/python/codeInsight/stdlib/PyStdlibModuleMembersProvider.java
index c7b5c20782d5..94e05074b9ab 100644
--- a/python/src/com/jetbrains/python/codeInsight/stdlib/PyStdlibModuleMembersProvider.java
+++ b/python/src/com/jetbrains/python/codeInsight/stdlib/PyStdlibModuleMembersProvider.java
@@ -3,7 +3,6 @@ package com.jetbrains.python.codeInsight.stdlib;
 import com.intellij.openapi.util.SystemInfo;
 import com.intellij.psi.PsiElement;
 import com.jetbrains.python.codeInsight.PyDynamicMember;
-import com.jetbrains.python.psi.PyClass;
 import com.jetbrains.python.psi.PyFile;
 import com.jetbrains.python.psi.impl.PyBuiltinCache;
 import com.jetbrains.python.psi.impl.PyQualifiedName;
@@ -24,10 +23,10 @@ public class PyStdlibModuleMembersProvider extends PyModuleMembersProvider {
     if (qName.equals("os")) {
       final List<PyDynamicMember> results = new ArrayList<PyDynamicMember>();
       PsiElement path = null;
-      PyClass osError = null;
+      PsiElement osError = null;
       if (module != null) {
         final PyBuiltinCache builtinCache = PyBuiltinCache.getInstance(module);
-        osError = builtinCache.getClass("OSError");
+        osError = builtinCache.getByName("OSError");
 
         final String pathModuleName = SystemInfo.isWindows ? "ntpath" : "posixpath";
         path = ResolveImportUtil.resolveModuleInRoots(PyQualifiedName.fromDottedString(pathModuleName), module);