diff --git a/cppad.spec b/cppad.spec
index a969952..21c4920 100644
--- a/cppad.spec
+++ b/cppad.spec
@@ -90,7 +90,7 @@ sed -i.stamp example/example.cpp -f example.sed
      -D CMAKE_VERBOSE_MAKEFILE=0 \
      -D cppad_documentation=YES \
      -D cppad_cxx_flags='-Wall -ansi -pedantic-errors -std=c++98 -Wshadow' \
-	.
+     .
 
 make %{?_smp_mflags}