Index: lib/Transforms/Instrumentation/MemorySanitizer.cpp
===================================================================
--- lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -158,7 +158,7 @@
        cl::desc("poison uninitialized stack variables with a call"),
        cl::Hidden, cl::init(false));
 static cl::opt<int> ClPoisonStackPattern("msan-poison-stack-pattern",
-       cl::desc("poison uninitialized stack variables with the given patter"),
+       cl::desc("poison uninitialized stack variables with the given pattern"),
        cl::Hidden, cl::init(0xff));
 static cl::opt<bool> ClPoisonUndef("msan-poison-undef",
        cl::desc("poison undef temps"),