diff --git a/toolsrc/src/vcpkg/vcpkgcmdarguments.cpp b/toolsrc/src/vcpkg/vcpkgcmdarguments.cpp
index ec4eef3a8a8370..d6634985e34cc8 100644
--- a/toolsrc/src/vcpkg/vcpkgcmdarguments.cpp
+++ b/toolsrc/src/vcpkg/vcpkgcmdarguments.cpp
@@ -922,7 +922,6 @@ namespace vcpkg
     constexpr StringLiteral VcpkgCmdArguments::OVERLAY_PORTS_ARG;
     constexpr StringLiteral VcpkgCmdArguments::OVERLAY_TRIPLETS_ENV;
     constexpr StringLiteral VcpkgCmdArguments::OVERLAY_TRIPLETS_ARG;
-    constexpr StringLiteral VcpkgCmdArguments::OVERLAY_TRIPLETS_ENV;
 
     constexpr StringLiteral VcpkgCmdArguments::BINARY_SOURCES_ARG;