diff --git a/src/Makefile.am b/src/Makefile.am
index a82d1b1..2066c28 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,11 +1,21 @@
 NULL =
 
-	bin_PROGRAMS = hvif
+bin_PROGRAMS = hvif
 
-#veriT configuration
-		hvif_CPPFLAGS = $(AM_CPPFLAGS) - I$(top_builddir) / src $(NULL) hvif_LDADD =
-											$(AM_LDADD) -
-	lm $(NULL)
+# veriT configuration
+hvif_CPPFLAGS = \
+	$(AM_CPPFLAGS) \
+	-I$(top_builddir)/src \
+	$(NULL)
+hvif_LDADD = \
+	$(AM_LDADD) \
+	-lm \
+	$(NULL)
+
+hvif_SOURCES = \
+	$(BUILT_SOURCES) \
+	src/main.c \
+	src/hvif-light.c \
+	src/hvif-light.h \
+	$(NULL)
 
-		hvif_SOURCES = $(BUILT_SOURCES) src / main.c src / hvif -
-	light.c src / hvif - light.h $(NULL)