diff --git a/workspace/TS100/Makefile b/workspace/TS100/Makefile
index 0a56e560..4771ed64 100644
--- a/workspace/TS100/Makefile
+++ b/workspace/TS100/Makefile
@@ -35,7 +35,7 @@ HEXFILE_DIR=Hexfile
 OUTPUT_DIR=Objects
 
 # code optimisation ------------------------------------------------------------
-OPTIM=-Os -flto -finline-small-functions -findirect-inlining -fdiagnostics-color -ffunction-sections -fdata-sections
+OPTIM=-Os -flto -ffat-lto-objects -finline-small-functions -findirect-inlining -fdiagnostics-color -ffunction-sections -fdata-sections
 
 
 # global defines ---------------------------------------------------------------