diff --git a/config/optimize b/config/optimize
index 2e1f9376ce..dd390b47aa 100644
--- a/config/optimize
+++ b/config/optimize
@@ -7,6 +7,7 @@ fi
 if [ "$OPTIMIZATIONS" = speed ];then
   GCC_OPTIM="$GCC_OPTIM -O3"
   GCC_OPTIM="$GCC_OPTIM -fexcess-precision=fast"
+  GCC_OPTIM="$GCC_OPTIM -ffast-math"
   LD_OPTIM="-Wl,--as-needed"
 fi