diff --git a/bench/Makefile b/bench/Makefile
index 17b48842f2c31e928031f075ad40a880cf101296..2a45fad981f8f0fc921bb4a4ac4dc975507f4469 100644
--- a/bench/Makefile
+++ b/bench/Makefile
@@ -1,4 +1,6 @@
+GHC=ghc
+
 # Run chanbench for 4 different channel types, 3 different benchmarks
 all:
-	for i in CHAN TCHAN TQUEUE TBQUEUE; do ghc -D$$i -O2 chanbench.hs -o chanbench-$$i; done
+	for i in CHAN TCHAN TQUEUE TBQUEUE; do $(GHC) -D$$i -O2 -fforce-recomp chanbench.hs -o chanbench-$$i; done
 	for i in 0 1 2; do echo; echo === test $$i ===; for j in CHAN TCHAN TQUEUE TBQUEUE; do printf "%-10s" $$j; time ./chanbench-$$j $$i 2000000; done; done