diff --git a/src/Makefile.am b/src/Makefile.am
index 8b28057f..0c8b1bfa 100755
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,6 @@
 bin_PROGRAMS = CTEM 
 #ifort optimized flags
-#AM_FCFLAGS =  -O3 -openmp -parallel -xHost -ipo -assume byterecl -m64 -heap-arrays -FR 
+AM_FCFLAGS =  -O3 -qopenmp -parallel -xHost -ipo -assume byterecl -m64 -heap-arrays -FR 
 #AM_FCFLAGS =  -O3 -openmp -parallel -assume byterecl -m64 -heap-arrays -FR 
 #ifort debug flags
 #AM_FCFLAGS = -O3 -p -g -openmp -debug all -traceback -CB -assume byterecl -m64 -heap-arrays -FR