diff --git a/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp b/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
index 5d60e03..89b99f9 100644
--- a/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
+++ b/lib/StaticAnalyzer/Frontend/CheckerRegistration.cpp
@@ -117,7 +117,7 @@
 
   for (unsigned i = 0, e = checkerOpts.size(); i != e; ++i) {
     if (checkerOpts[i].isUnclaimed())
-      diags.Report(diag::warn_unkwown_analyzer_checker)
+      diags.Report(diag::warn_unknown_analyzer_checker)
           << checkerOpts[i].getName();
   }