diff --git a/clang-tools-extra/clang-tidy/fuchsia/MultipleInheritanceCheck.cpp b/clang-tools-extra/clang-tidy/fuchsia/MultipleInheritanceCheck.cpp
--- a/clang-tools-extra/clang-tidy/fuchsia/MultipleInheritanceCheck.cpp
+++ b/clang-tools-extra/clang-tidy/fuchsia/MultipleInheritanceCheck.cpp
@@ -116,7 +116,7 @@
     }
 
     if (NumConcrete > 1) {
-      diag(D->getBeginLoc(), "inheriting mulitple classes that aren't "
+      diag(D->getBeginLoc(), "inheriting multiple classes that aren't "
                              "pure virtual is discouraged");
     }
   }