diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index d6f9236077e..80e101f748b 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -1220,6 +1220,10 @@ bool AsmParser::ParseStatement() {
 
     // Symbol attribute directives
 
+    if (IDVal == ".extern") {
+      EatToEndOfStatement(); // .extern is the default, ignore it.
+      return false;
+    }
     if (IDVal == ".globl" || IDVal == ".global")
       return ParseDirectiveSymbolAttribute(MCSA_Global);
     if (IDVal == ".indirect_symbol")
diff --git a/test/MC/AsmParser/extern.s b/test/MC/AsmParser/extern.s
new file mode 100644
index 00000000000..461f843c692
--- /dev/null
+++ b/test/MC/AsmParser/extern.s
@@ -0,0 +1,4 @@
+# RUN: llvm-mc -triple i386-unknown-unknown %s | FileCheck %s
+
+# CHECK-NOT: foo
+.extern foo