diff --git a/compile.mk b/compile.mk
index 3d2ce16..7e540ca 100755
--- a/compile.mk
+++ b/compile.mk
@@ -17,6 +17,10 @@ ifeq ($(shell uname),Darwin)
      FFF = g77 -O1 -Wall -fno-automatic -Wno-globals -fno-backslash \
 	 -ffast-math
   endif
+  ifeq ($(shell uname -m), x86_64)
+    FFF = gfortran -O1 -Wall -fno-automatic -fno-backslash -ffast-math
+    FF90 = gfortran -fno-automatic
+  endif
   ifeq  ($(shell uname -m),i386) 
      FFF = ifort -V -noautomatic -warn
      FF90 = ifort -V -noautomatic -warn