diff --git a/projects/amdsmi/CMakeLists.txt b/projects/amdsmi/CMakeLists.txt
index 5efad00a9d..ced02f23fc 100644
--- a/projects/amdsmi/CMakeLists.txt
+++ b/projects/amdsmi/CMakeLists.txt
@@ -16,6 +16,12 @@ set(BUILD_SHARED_LIBS
 set(CMAKE_MODULE_PATH
     "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/"
     CACHE INTERNAL "Default module path.")
+
+# Default libdir to "lib", this skips GNUInstallDirs from trying to take a guess if it's unset
+set(CMAKE_INSTALL_LIBDIR
+    "lib"
+    CACHE STRING "Library install directory")
+
 ## Include common cmake modules
 include(utils)
 include(help_package)