diff --git a/src/Makefile.gfortran b/src/Makefile.gfortran
index d09752ce..66e91cff 100644
--- a/src/Makefile.gfortran
+++ b/src/Makefile.gfortran
@@ -24,8 +24,8 @@ libs = -L/usr/lib/ -llapack -lblas
 # libs = -L/${MKLROOT}/lib/intel64 -lmkl_core -lmkl_sequential -lmkl_intel_lp64 -lpthread
  
  
-main :  $(obj)
-	$(f90) $(obj) -o wt.x $(libs) 
+main :  $(OBJ)
+	$(f90) $(OBJ) -o wt.x $(libs) 
 	cp -f wt.x ../bin
 
 .SUFFIXES: .o .f90
diff --git a/src/Makefile.intel-seq b/src/Makefile.intel-seq
index 7004ff29..245e9e74 100644
--- a/src/Makefile.intel-seq
+++ b/src/Makefile.intel-seq
@@ -23,8 +23,8 @@ libs = -L/opt/intel/mkl/lib/ \
 		-lmkl_intel_lp64 -lmkl_sequential \
 		-lmkl_core -liomp5
  
-main :  $(obj)
-	$(f90) $(obj) -o wt.x $(libs) 
+main :  $(OBJ)
+	$(f90) $(OBJ) -o wt.x $(libs) 
 	cp -f wt.x ../bin
 
 .SUFFIXES: .o .f90