diff --git a/code/unix/Makefile b/code/unix/Makefile
index c0bf02ff..fa45eec9 100755
--- a/code/unix/Makefile
+++ b/code/unix/Makefile
@@ -160,7 +160,7 @@ ifeq ($(PLATFORM),linux)
 # TTimo: legacy RELEASE_CFLAGS
 # NOTE: the -fomit-frame-pointer option leads to an unstable binary on my test box if it was built on the main box
 #   but building on the Mdk 7.2 baseline seems to work
-      RELEASE_CFLAGS=$(BASE_CFLAGS) -DNDEBUG -O3 -mtune=pentiumpro -march=pentium -fomit-frame-pointer -ffast-math -falign-loops=2 -falign-jumps=2 -falign-functions=2 -fno-strict-aliasing -fstrength-reduce
+      RELEASE_CFLAGS=$(BASE_CFLAGS) -DNDEBUG -O3 -march=i686 -fomit-frame-pointer -ffast-math -falign-loops=2 -falign-jumps=2 -falign-functions=2 -fno-strict-aliasing -fstrength-reduce
 # TTimo: use this for building on P3 gcc 2.95.3 libc2.2 for all targets (experimental! -fomit-fram-pointer removed)
 #      RELEASE_CFLAGS=$(BASE_CFLAGS) -DNDEBUG -O3 -mtune=pentiumpro -march=pentium -pipe -ffast-math -malign-loops=2 -malign-jumps=2 -malign-functions=2 -fno-strict-aliasing -fstrength-reduce
     endif