diff --git a/Makefile b/Makefile
index 46605c9..aa8ad4a 100644
--- a/Makefile
+++ b/Makefile
@@ -30,6 +30,6 @@ tar:
 	$(F90) $(F90FLAGS) -c $<
 
 run-test:
-        printf "13\n1\n-2\n2\n1.5\n100\n1.0e-7\n1\n" | ./riemann_rmhd
+	printf "13\n1\n-2\n2\n1.5\n100\n1.0e-7\n1\n" | ./riemann_rmhd
 
 # DO NOT DELETE