diff --git a/CMakeLists.txt b/CMakeLists.txt
index b441e3bdab94e..30bac316739fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -289,7 +289,7 @@ if(NOT EXISTS "${CLANG_MAIN_INCLUDE_DIR}/clang/AST/Decl.h")
 endif()
 
 # This could be computed using ${CMAKE_CFG_INTDIR} if we want to link Swift
-# against a mathing LLVM build configuration.  However, we usually want to be
+# against a matching LLVM build configuration.  However, we usually want to be
 # flexible and allow linking a debug Swift against optimized LLVM.
 set(LLVM_RUNTIME_OUTPUT_INTDIR "${LLVM_BINARY_DIR}")
 set(LLVM_LIBRARY_OUTPUT_INTDIR "${LLVM_LIBRARY_DIR}")
diff --git a/docs/IndexInvalidation.rst b/docs/IndexInvalidation.rst
index 97dd1dc016d9c..26f809a0ef5e5 100644
--- a/docs/IndexInvalidation.rst
+++ b/docs/IndexInvalidation.rst
@@ -97,7 +97,7 @@ user:
     This rule does not imply that indices should be cheap to convert to actual
     integers.  The offsets for consecutive elements could be non-consecutive
     (e.g., in a hash table with open addressing), or consist of multiple
-    offsets so that the conversion to an integer is non-trival (e.g., in a
+    offsets so that the conversion to an integer is non-trivial (e.g., in a
     tree).
 
     Note that this rule, like all other rules, is an "as if" rule.  As long as