1diff --git a/folly/memory/test/UninitializedMemoryHacksTest.cpp b/folly/memory/test/UninitializedMemoryHacksTest.cpp
2index 38e27c3..17424af 100644
3--- a/folly/memory/test/UninitializedMemoryHacksTest.cpp
4+++ b/folly/memory/test/UninitializedMemoryHacksTest.cpp
5@@ -283,7 +283,7 @@ TEST(UninitializedMemoryHacks, simpleStringWChar) {
6 }
7
8 TEST(UninitializedMemoryHacks, simpleStringSChar) {
9- testSimple<std::basic_string<signed char>>();
10+ testSimple<std::basic_string<char>>();
11 }
12
13 TEST(UninitializedMemoryHacks, simpleVectorChar) {
14@@ -307,7 +307,7 @@ TEST(UninitializedMemoryHacks, randomStringWChar) {
15 }
16
17 TEST(UninitializedMemoryHacks, randomStringSChar) {
18- testRandom<std::basic_string<signed char>>();
19+ testRandom<std::basic_string<char>>();
20 }
21
22 TEST(UninitializedMemoryHacks, randomVectorChar) {
23@@ -323,5 +323,5 @@ TEST(UninitializedMemoryHacks, randomVectorInt) {
24 }
25
26 // We are deliberately putting this at the bottom to make sure it can follow use
27-FOLLY_DECLARE_STRING_RESIZE_WITHOUT_INIT(signed char)
28+//FOLLY_DECLARE_STRING_RESIZE_WITHOUT_INIT(char)
29 FOLLY_DECLARE_VECTOR_RESIZE_WITHOUT_INIT(int)