diff --git a/nc_optimisation.cmake b/nc_optimisation.cmake
index 66e9ba0..704dce9 100644
--- a/nc_optimisation.cmake
+++ b/nc_optimisation.cmake
@@ -131,7 +131,7 @@ else()
     append_compile_flag(-funswitch-loops)
 
     # GCC 8.2 encounters an ICE in LTO linking with ipa-pta enabled
-    # append_compile_flag (-fipa-pta)
+    append_compile_flag (-fipa-pta)
 
     # safety removal for performance
     append_compile_flag(-fno-stack-protector)