diff --git a/glslang/HLSL/hlslParseables.cpp b/glslang/HLSL/hlslParseables.cpp
index 15918dc3..8fb1d290 100644
--- a/glslang/HLSL/hlslParseables.cpp
+++ b/glslang/HLSL/hlslParseables.cpp
@@ -564,8 +564,8 @@ void TBuiltInParseablesHlsl::initialize(int /*version*/, EProfile /*profile*/, c
         { "GetRenderTargetSamplePosition",    "V2",    "F",       "V1",             "I",             EShLangAll,    false },
         { "GroupMemoryBarrier",               nullptr, nullptr,   "-",              "-",             EShLangCS,     false },
         { "GroupMemoryBarrierWithGroupSync",  nullptr, nullptr,   "-",              "-",             EShLangCS,     false },
-        { "InterlockedAdd",                   "-",     "-",       "SVM,,>",         "UI,,",          EShLangPSCS,   false },
-        { "InterlockedAdd",                   "-",     "-",       "SVM,",           "UI,",           EShLangPSCS,   false },
+        { "InterlockedAdd",                   "-",     "-",       "SVM,,>",         "FUI,,",          EShLangPSCS,   false },
+        { "InterlockedAdd",                   "-",     "-",       "SVM,",           "FUI,",           EShLangPSCS,   false },
         { "InterlockedAnd",                   "-",     "-",       "SVM,,>",         "UI,,",          EShLangPSCS,   false },
         { "InterlockedAnd",                   "-",     "-",       "SVM,",           "UI,",           EShLangPSCS,   false },
         { "InterlockedCompareExchange",       "-",     "-",       "SVM,,,>",        "UI,,,",         EShLangPSCS,   false },