diff --git a/lib/Target/MSP430/MSP430MCAsmInfo.cpp b/lib/Target/MSP430/MSP430MCAsmInfo.cpp
index 4e3a8d0..516eacb 100644
--- a/lib/Target/MSP430/MSP430MCAsmInfo.cpp
+++ b/lib/Target/MSP430/MSP430MCAsmInfo.cpp
@@ -19,6 +19,7 @@
   WeakRefDirective ="\t.weak\t";
   SetDirective = "\t.set\t";
   PCSymbol=".";
+  CommentString = ";";
 
   AlignmentIsInBytes = false;
   AllowNameToStartWithDigit = true;