diff --git a/lib/Basic/Version.cpp b/lib/Basic/Version.cpp
index 178812869a37f..70ade44b26114 100644
--- a/lib/Basic/Version.cpp
+++ b/lib/Basic/Version.cpp
@@ -59,7 +59,7 @@ namespace version {
 /// Print a string of the form "LLVM xxxxx, Clang yyyyy, Swift zzzzz",
 /// where each placeholder is the revision for the associated repository.
 static void printFullRevisionString(raw_ostream &out) {
-  // Abitrarily truncate to 10 characters. This should be enough to unique
+  // Arbitrarily truncate to 10 characters. This should be enough to unique
   // Git hashes for the time being, and certainly enough for SVN revisions,
   // while keeping the version string from being ridiculously long.
 #if defined(LLVM_REVISION)
diff --git a/lib/ClangImporter/MacroTable.def b/lib/ClangImporter/MacroTable.def
index 64a31eca04c77..0c4265d1221de 100644
--- a/lib/ClangImporter/MacroTable.def
+++ b/lib/ClangImporter/MacroTable.def
@@ -10,7 +10,7 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file defines the database of macros that should be suppresed during
+// This file defines the database of macros that should be suppressed during
 // API import.
 //
 // ===---------------------------------------------------------------------===//