diff --git a/lib/mayaUsd/render/MaterialXGenOgsXml/GlslOcioNodeImpl.cpp b/lib/mayaUsd/render/MaterialXGenOgsXml/GlslOcioNodeImpl.cpp
index 474383167d..f2bbe7682c 100644
--- a/lib/mayaUsd/render/MaterialXGenOgsXml/GlslOcioNodeImpl.cpp
+++ b/lib/mayaUsd/render/MaterialXGenOgsXml/GlslOcioNodeImpl.cpp
@@ -25,6 +25,7 @@
 #include <MaterialXGenShader/Shader.h>
 #include <MaterialXGenShader/ShaderStage.h>
 
+#include <cstring>
 #include <map>
 
 MATERIALX_NAMESPACE_BEGIN
diff --git a/lib/mayaUsd/render/vp2RenderDelegate/material.cpp b/lib/mayaUsd/render/vp2RenderDelegate/material.cpp
index f2aaede226..b52c944a21 100644
--- a/lib/mayaUsd/render/vp2RenderDelegate/material.cpp
+++ b/lib/mayaUsd/render/vp2RenderDelegate/material.cpp
@@ -2663,11 +2663,12 @@ TfToken _RequiresColorManagement(
         for (auto&& csAttrName : _knownColorSpaceAttrs) {
             auto paramIt = n.parameters.find(csAttrName);
             if (paramIt != n.parameters.end()) {
-                if (paramIt->second.IsHolding<TfToken>()) {
-                    sourceColorSpace = paramIt->second.UncheckedGet<TfToken>().GetString();
+                const VtValue& val = paramIt->second;
+                if (val.IsHolding<TfToken>()) {
+                    sourceColorSpace = val.UncheckedGet<TfToken>().GetString();
                     return;
-                } else if (paramIt->second.IsHolding<std::string>()) {
-                    sourceColorSpace = paramIt->second.UncheckedGet<std::string>();
+                } else if (val.IsHolding<std::string>()) {
+                    sourceColorSpace = val.UncheckedGet<std::string>();
                     return;
                 }
             }