diff --git a/buildbot/osuosl/master/config/builders.py b/buildbot/osuosl/master/config/builders.py
index a83842903..427d83bd5 100644
--- a/buildbot/osuosl/master/config/builders.py
+++ b/buildbot/osuosl/master/config/builders.py
@@ -120,6 +120,9 @@ def collapseRequestsDoxygen(master, builder, req1, req2):
                         "-DCMAKE_BUILD_TYPE=Release",
                         "-DCLANG_ENABLE_ARCMT=OFF",
                         "-DCLANG_ENABLE_CLANGD=OFF",
+                        "-DCLANG_RESOURCE_DIR=../lib/clang",
+                        "-DCLANG_VENDOR=SIE",
+                        "-DCLANG_VENDOR_UTI=SIE",
                         "-DLLVM_BUILD_RUNTIME=OFF",
                         "-DLLVM_CCACHE_BUILD=ON",
                         "-DLLVM_INCLUDE_EXAMPLES=OFF",
@@ -142,6 +145,9 @@ def collapseRequestsDoxygen(master, builder, req1, req2):
                         "-DCMAKE_BUILD_TYPE=Release",
                         "-DCLANG_ENABLE_ARCMT=OFF",
                         "-DCLANG_ENABLE_CLANGD=OFF",
+                        "-DCLANG_RESOURCE_DIR=../lib/clang",
+                        "-DCLANG_VENDOR=SIE",
+                        "-DCLANG_VENDOR_UTI=SIE",
                         "-DLLVM_BUILD_RUNTIME=OFF",
                         "-DLLVM_CCACHE_BUILD=ON",
                         "-DLLVM_INCLUDE_EXAMPLES=OFF",
@@ -957,6 +963,9 @@ def collapseRequestsDoxygen(master, builder, req1, req2):
                         "-DCMAKE_BUILD_TYPE=Release",
                         "-DCLANG_ENABLE_ARCMT=OFF",
                         "-DCLANG_ENABLE_CLANGD=OFF",
+                        "-DCLANG_RESOURCE_DIR=../lib/clang",
+                        "-DCLANG_VENDOR=SIE",
+                        "-DCLANG_VENDOR_UTI=SIE",
                         "-DLLVM_CCACHE_BUILD=ON",
                         "-DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-sie-ps5",
                         "-DLLVM_INCLUDE_EXAMPLES=OFF",