diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8abefc9..b176519 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,15 +41,15 @@ if (WIN32)
   endif()
 elseif(APPLE)
   if ("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/osx64 CACHE TYPE INTERNAL)
+    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/osx64 CACHE STRING INTERNAL)
   else()
-    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/osx32 CACHE TYPE INTERNAL)
+    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/osx32 CACHE STRING INTERNAL)
   endif()
 elseif(NOT ANDROID)
   if ("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/linux64 CACHE TYPE INTERNAL)
+    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/linux64 CACHE STRING INTERNAL)
   else()
-    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/linux32 CACHE TYPE INTERNAL)
+    set(PLUGINDIR ${CMAKE_BINARY_DIR}/bin/linux32 CACHE STRING INTERNAL)
   endif()
 endif()
 MESSAGE("SteamVR plugin path: ${PLUGINDIR}")