diff --git a/FindOpenStudioSDK.cmake b/FindOpenStudioSDK.cmake
index c003132a..fe8f84e5 100644
--- a/FindOpenStudioSDK.cmake
+++ b/FindOpenStudioSDK.cmake
@@ -25,10 +25,10 @@ else()
   elseif(UNIX)
     if(LSB_RELEASE_VERSION_SHORT MATCHES "20.04")
       set(OPENSTUDIO_EXPECTED_HASH 5e67958249d99f96149b4d5576c3d0ef)
-      set(OPENSTUDIO_PLATFORM "Ubuntu-20.04")
+      set(OPENSTUDIO_PLATFORM "Ubuntu-20.04_x86_64")
     else() # Assumes 20.04
       set(OPENSTUDIO_EXPECTED_HASH 5e67958249d99f96149b4d5576c3d0ef)
-      set(OPENSTUDIO_PLATFORM "Ubuntu-20.04")
+      set(OPENSTUDIO_PLATFORM "Ubuntu-20.04_x86_64")
     endif()
     set(OPENSTUDIO_EXT "tar.gz")
   elseif(WIN32)