diff --git a/tutorials/Makefile.am b/tutorials/Makefile.am
index 122e7a88..de6e91e4 100644
--- a/tutorials/Makefile.am
+++ b/tutorials/Makefile.am
@@ -9,7 +9,7 @@ LDADD =	$(top_builddir)/libopmcore.la
 noinst_PROGRAMS = tutorial1
 tutorial1_SOURCES   = tutorial1.cpp
 
-#if UMFPACK
+if UMFPACK
 noinst_PROGRAMS   += tutorial2
 tutorial2_SOURCES  = tutorial2.cpp
-#endif
+endif