diff --git a/src/junction_filter.hpp b/src/junction_filter.hpp
index 302a5d86..d21b14e2 100644
--- a/src/junction_filter.hpp
+++ b/src/junction_filter.hpp
@@ -76,7 +76,7 @@ const string ST_IPOS_RULES_FILE = "selftrain_initial_pos";
 const string ST_INEG_RULES_FILE = "selftrain_initial_neg";
 const uint16_t DEFAULT_FILTER_THREADS = 1;
 const uint16_t DEFAULT_SELFTRAIN_TREES = 100;
-const double DEFAULT_FILTER_THRESHOLD = 0.75;
+const double DEFAULT_FILTER_THRESHOLD = 0.625;
 
 
 class JunctionFilter {
diff --git a/tests/Makefile.am b/tests/Makefile.am
index b3a42b38..d6d27253 100755
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -32,6 +32,7 @@ check_unit_tests_SOURCES =	bam_tests.cpp \
 check_unit_tests_CXXFLAGS = -O0 @AM_CXXFLAGS@ @CXXFLAGS@
 
 check_unit_tests_CPPFLAGS =	-isystem $(top_srcdir)/deps/htslib-1.3 \
+				-isystem $(top_srcdir)/deps/ranger-0.3.8/include \
 				-I$(top_srcdir)/lib/include \
 				-DRESOURCESDIR=\"$(top_srcdir)/tests/resources\" \
 				-DDATADIR=\"$(datadir)\" \
@@ -40,12 +41,14 @@ check_unit_tests_CPPFLAGS =	-isystem $(top_srcdir)/deps/htslib-1.3 \
 
 check_unit_tests_LDFLAGS =	-L../lib \
 				-L../deps/htslib-1.3 \
+				-L../deps/ranger-0.3.8 \
 				@AM_LDFLAGS@ \
 				@LDFLAGS@
 	
 check_unit_tests_LDADD =	libgtest.la \
 				-lportcullis \
 				-lphts \
+				-lranger \
 				@AM_LIBS@	
 
 clean-local: clean-local-check