diff --git a/lldb/source/DataFormatters/FormatManager.cpp b/lldb/source/DataFormatters/FormatManager.cpp
--- a/lldb/source/DataFormatters/FormatManager.cpp
+++ b/lldb/source/DataFormatters/FormatManager.cpp
@@ -582,6 +582,10 @@
 std::vector<lldb::LanguageType>
 FormatManager::GetCandidateLanguages(lldb::LanguageType lang_type) {
   switch (lang_type) {
+  case lldb::eLanguageTypeSwift:
+    return {lldb::eLanguageTypeSwift, lldb::eLanguageTypeObjC};
+  case lldb::eLanguageTypeObjC:
+    return {lldb::eLanguageTypeObjC, lldb::eLanguageTypeSwift};
   case lldb::eLanguageTypeC:
   case lldb::eLanguageTypeC89:
   case lldb::eLanguageTypeC99:
diff --git a/lldb/unittests/DataFormatter/FormatManagerTests.cpp b/lldb/unittests/DataFormatter/FormatManagerTests.cpp
--- a/lldb/unittests/DataFormatter/FormatManagerTests.cpp
+++ b/lldb/unittests/DataFormatter/FormatManagerTests.cpp
@@ -43,7 +43,11 @@
   EXPECT_EQ(FormatManager::GetCandidateLanguages(eLanguageTypeC_plus_plus_14),
             candidates);
 
-  candidates = {eLanguageTypeObjC};
+  candidates = {eLanguageTypeObjC, eLanguageTypeSwift};
   EXPECT_EQ(FormatManager::GetCandidateLanguages(eLanguageTypeObjC),
             candidates);
+
+  candidates = {eLanguageTypeSwift, eLanguageTypeObjC};
+  EXPECT_EQ(FormatManager::GetCandidateLanguages(eLanguageTypeSwift),
+            candidates);
 }