diff --git a/config/optimize b/config/optimize
index ddd6d83579..74af1c324b 100644
--- a/config/optimize
+++ b/config/optimize
@@ -1,3 +1,8 @@
+if [ "$OPTIMIZATIONS" = fast ];then
+  GCC_OPTIM="-Ofast"
+  LD_OPTIM=""
+fi
+
 if [ "$OPTIMIZATIONS" = speed ];then
   GCC_OPTIM="-O3"
   LD_OPTIM=""
@@ -13,7 +18,6 @@ if [ "$OPTIMIZATIONS" = size ];then
   LD_OPTIM=""
 fi
 
-GCC_OPTIM="$GCC_OPTIM -ffast-math"
 GCC_OPTIM="$GCC_OPTIM -ftree-loop-distribution"
 GCC_OPTIM="$GCC_OPTIM -floop-interchange"
 GCC_OPTIM="$GCC_OPTIM -floop-strip-mine"