diff --git a/src/preferences/network/InterfaceListItem.cpp b/src/preferences/network/InterfaceListItem.cpp
index adb06cd817..f36aa8f39a 100644
--- a/src/preferences/network/InterfaceListItem.cpp
+++ b/src/preferences/network/InterfaceListItem.cpp
@@ -35,7 +35,12 @@
 InterfaceListItem::InterfaceListItem(const char* name)
 	:
 	BListItem(0, false),
-	fIcon(NULL)
+	fIcon(NULL),
+	fFirstLineOffset(0),
+	fLineOffset(0),
+	fDisabled(false),
+	fHasLink(false),
+	fConnecting(false)
 {
 	fInterface.SetTo(name);
 	_Init();
diff --git a/src/preferences/network/InterfaceView.cpp b/src/preferences/network/InterfaceView.cpp
index f5644ade82..58ca818d0d 100644
--- a/src/preferences/network/InterfaceView.cpp
+++ b/src/preferences/network/InterfaceView.cpp
@@ -43,7 +43,8 @@ static const uint32 kMsgJoinNetwork = 'join';
 
 InterfaceView::InterfaceView()
 	:
-	BGroupView(B_VERTICAL)
+	BGroupView(B_VERTICAL),
+	fPulseCount(0)
 {
 	SetFlags(Flags() | B_PULSE_NEEDED);
 
diff --git a/src/preferences/network/NetworkSettingsAddOn.cpp b/src/preferences/network/NetworkSettingsAddOn.cpp
index 30f1f4f78f..c7a23a4e41 100644
--- a/src/preferences/network/NetworkSettingsAddOn.cpp
+++ b/src/preferences/network/NetworkSettingsAddOn.cpp
@@ -108,7 +108,10 @@ BNetworkInterfaceListItem::BNetworkInterfaceListItem(int family,
 	fSettings(settings),
 	fFamily(family),
 	fInterface(interface),
-	fLabel(label)
+	fLabel(label),
+	fDisabled(false),
+	fLineOffset(0),
+	fSpacing(0)
 {
 }
 
diff --git a/src/preferences/network/ServiceListItem.cpp b/src/preferences/network/ServiceListItem.cpp
index 8b8d0321d6..604fe434f3 100644
--- a/src/preferences/network/ServiceListItem.cpp
+++ b/src/preferences/network/ServiceListItem.cpp
@@ -27,6 +27,8 @@ ServiceListItem::ServiceListItem(const char* name, const char* label,
 	fName(name),
 	fLabel(label),
 	fSettings(settings),
+	fOwner(NULL),
+	fLineOffset(0),
 	fEnabled(false)
 {
 }