diff --git a/test_problems/Makefile.am b/test_problems/Makefile.am
index 68d864567..a7919df96 100644
--- a/test_problems/Makefile.am
+++ b/test_problems/Makefile.am
@@ -1,5 +1,5 @@
 EXTRA_DIST =
 
 dist-hook:
-        rm -rf `find $(distdir)/ -name .svn`
-        rm -rf `find $(distdir)/ -name .deps`
\ No newline at end of file
+	rm -rf `find $(distdir)/ -name .svn`
+	rm -rf `find $(distdir)/ -name .deps`
\ No newline at end of file