diff --git a/paris-traceroute-current/src/ConcurrentTracert.cc b/paris-traceroute-current/src/ConcurrentTracert.cc
index 2139983..8361885 100644
--- a/paris-traceroute-current/src/ConcurrentTracert.cc
+++ b/paris-traceroute-current/src/ConcurrentTracert.cc
@@ -27,7 +27,7 @@ ConcurrentTracert::~ConcurrentTracert () {
 
 bool
 ConcurrentTracert::trace () {
-	trace(opts->dst_addr, id_current, id_current+2000);
+	return trace(opts->dst_addr, id_current, id_current+2000);
 }
 
 bool
diff --git a/paris-traceroute-current/src/ExhaustiveOldTracert.cc b/paris-traceroute-current/src/ExhaustiveOldTracert.cc
index 7ff6202..14e329d 100644
--- a/paris-traceroute-current/src/ExhaustiveOldTracert.cc
+++ b/paris-traceroute-current/src/ExhaustiveOldTracert.cc
@@ -161,7 +161,7 @@ ExhaustiveOldTracert::ProbesToSend(int nbr_interfaces) {
 
 bool
 ExhaustiveOldTracert::trace () {
-	trace(opts->dst_addr, id_current, id_current + 2000);
+	return trace(opts->dst_addr, id_current, id_current + 2000);
 }
 
 
diff --git a/paris-traceroute-current/src/ExhaustiveTracert.cc b/paris-traceroute-current/src/ExhaustiveTracert.cc
index b7e8e2c..3e54586 100644
--- a/paris-traceroute-current/src/ExhaustiveTracert.cc
+++ b/paris-traceroute-current/src/ExhaustiveTracert.cc
@@ -86,7 +86,7 @@ ExhaustiveTracert::ProbesToSend(int nbr_interfaces) {
 
 bool
 ExhaustiveTracert::trace () {
-	trace(opts->dst_addr, id_current, 0/*XXX*/);
+	return trace(opts->dst_addr, id_current, 0/*XXX*/);
 }
 
 void 
diff --git a/paris-traceroute-current/src/HopByHopTracert.cc b/paris-traceroute-current/src/HopByHopTracert.cc
index 69d5b8b..5df9972 100644
--- a/paris-traceroute-current/src/HopByHopTracert.cc
+++ b/paris-traceroute-current/src/HopByHopTracert.cc
@@ -37,7 +37,7 @@ HopByHopTracert::~HopByHopTracert () {
 
 bool
 HopByHopTracert::trace () {
-	trace(opts->dst_addr, id_current, id_current+2000);
+	return trace(opts->dst_addr, id_current, id_current+2000);
 }
 
 /**
diff --git a/paris-traceroute-current/src/PackByPackTracert.cc b/paris-traceroute-current/src/PackByPackTracert.cc
index 7220798..cd17671 100644
--- a/paris-traceroute-current/src/PackByPackTracert.cc
+++ b/paris-traceroute-current/src/PackByPackTracert.cc
@@ -24,7 +24,7 @@ PackByPackTracert::~PackByPackTracert () {
 
 bool
 PackByPackTracert::trace () {
-	trace(opts->dst_addr, id_current, id_current+2000);
+	return trace(opts->dst_addr, id_current, id_current+2000);
 }
 
 bool
diff --git a/paris-traceroute-current/src/ScoutTracert.cc b/paris-traceroute-current/src/ScoutTracert.cc
index 51f8b71..de3a168 100644
--- a/paris-traceroute-current/src/ScoutTracert.cc
+++ b/paris-traceroute-current/src/ScoutTracert.cc
@@ -30,7 +30,7 @@ ScoutTracert::~ScoutTracert () {
 
 bool
 ScoutTracert::trace () {
-	trace(opts->dst_addr, id_current, id_current+2000);
+	return trace(opts->dst_addr, id_current, id_current+2000);
 }
 
 /**