diff --git a/Toolchain/CMake/ClangToolchain.txt.in b/Toolchain/CMake/ClangToolchain.txt.in
index f01392358a..c90f5c95d4 100644
--- a/Toolchain/CMake/ClangToolchain.txt.in
+++ b/Toolchain/CMake/ClangToolchain.txt.in
@@ -11,8 +11,8 @@ set(TOOLCHAIN_PATH ${TOOLCHAIN_ROOT}/bin)
 # where to read from/write to
 set(CMAKE_SYSROOT @SERENITY_BUILD_DIR@/Root)
 set(CMAKE_STAGING_PREFIX @SERENITY_BUILD_DIR@/Root/usr/local)
-set(CMAKE_INSTALL_PREFIX @SERENITY_BUILD_DIR@/Root/usr/local)
-set(CMAKE_INSTALL_DATAROOTDIR @SERENITY_BUILD_DIR@/Root/usr/local/share)
+set(CMAKE_INSTALL_PREFIX /usr/local)
+set(CMAKE_INSTALL_DATAROOTDIR share)
 
 set(CMAKE_C_COMPILER ${TOOLCHAIN_PATH}/clang)
 set(CMAKE_C_COMPILER_TARGET ${triple})
diff --git a/Toolchain/CMake/GNUToolchain.txt.in b/Toolchain/CMake/GNUToolchain.txt.in
index eb7d3d6764..87f860fc25 100644
--- a/Toolchain/CMake/GNUToolchain.txt.in
+++ b/Toolchain/CMake/GNUToolchain.txt.in
@@ -11,8 +11,8 @@ set(TOOLCHAIN_PREFIX ${TOOLCHAIN_PATH}/${triple}-)
 # where to read from/write to
 set(CMAKE_SYSROOT @SERENITY_BUILD_DIR@/Root)
 set(CMAKE_STAGING_PREFIX @SERENITY_BUILD_DIR@/Root/usr/local)
-set(CMAKE_INSTALL_PREFIX @SERENITY_BUILD_DIR@/Root/usr/local)
-set(CMAKE_INSTALL_DATAROOTDIR @SERENITY_BUILD_DIR@/Root/usr/local/share)
+set(CMAKE_INSTALL_PREFIX /usr/local)
+set(CMAKE_INSTALL_DATAROOTDIR share)
 
 set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}gcc)
 set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}g++)