diff --git a/client.cpp b/client.cpp
index 0dd5591779..3625665409 100644
--- a/client.cpp
+++ b/client.cpp
@@ -2258,8 +2258,7 @@ void Client::updateCursor()
 void Client::updateCompositeBlocking(bool readProperty)
 {
     if (readProperty) {
-        const unsigned long properties[2] = {0, NET::WM2BlockCompositing};
-        NETWinInfo i(connection(), window(), rootWindow(), properties, 2);
+        NETWinInfo i(connection(), window(), rootWindow(), 0, NET::WM2BlockCompositing);
         setBlockingCompositing(i.isBlockingCompositing());
     }
     else
diff --git a/group.cpp b/group.cpp
index 13cce3d12a..296da16844 100644
--- a/group.cpp
+++ b/group.cpp
@@ -204,9 +204,8 @@ Group::Group(Window leader_P)
 {
     if (leader_P != None) {
         leader_client = workspace()->findClient(WindowMatchPredicate(leader_P));
-        unsigned long properties[ 2 ] = { 0, NET::WM2StartupId };
         leader_info = new NETWinInfo(connection(), leader_P, rootWindow(),
-                                      properties, 2);
+                                      0, NET::WM2StartupId);
     }
     effect_group = new EffectWindowGroupImpl(this);
     workspace()->addGroup(this);
diff --git a/manage.cpp b/manage.cpp
index 56f21c69c4..d8bd190b91 100644
--- a/manage.cpp
+++ b/manage.cpp
@@ -80,8 +80,7 @@ bool Client::manage(xcb_window_t w, bool isMapped)
     if (isMapped)
         init_minimize = false; // If it's already mapped, ignore hint
 
-    unsigned long properties[2];
-    properties[WinInfo::PROTOCOLS] =
+    const NET::Properties properties =
         NET::WMDesktop |
         NET::WMState |
         NET::WMWindowType |
@@ -91,7 +90,7 @@ bool Client::manage(xcb_window_t w, bool isMapped)
         NET::WMIcon |
         NET::WMPid |
         NET::WMIconName;
-    properties[WinInfo::PROTOCOLS2] =
+    const NET::Properties2 properties2 =
         NET::WM2UserTime |
         NET::WM2StartupId |
         NET::WM2ExtendedStrut |
@@ -99,7 +98,7 @@ bool Client::manage(xcb_window_t w, bool isMapped)
         NET::WM2FullscreenMonitors |
         NET::WM2FrameOverlap;
 
-    info = new WinInfo(this, m_client, rootWindow(), properties, 2);
+    info = new WinInfo(this, m_client, rootWindow(), properties, properties2);
 
     m_colormap = attr.colormap;
 
diff --git a/netinfo.cpp b/netinfo.cpp
index 5e0b139364..61aace8771 100644
--- a/netinfo.cpp
+++ b/netinfo.cpp
@@ -246,8 +246,8 @@ void RootInfo::changeShowingDesktop(bool showing)
 // ****************************************
 
 WinInfo::WinInfo(Client * c, xcb_window_t window,
-                 xcb_window_t rwin, const unsigned long pr[], int pr_size)
-    : NETWinInfo(connection(), window, rwin, pr, pr_size, NET::WindowManager), m_client(c)
+                 xcb_window_t rwin, NET::Properties properties, NET::Properties2 properties2)
+    : NETWinInfo(connection(), window, rwin, properties, properties2, NET::WindowManager), m_client(c)
 {
 }
 
diff --git a/netinfo.h b/netinfo.h
index 8530396718..9d2d1cb6a4 100644
--- a/netinfo.h
+++ b/netinfo.h
@@ -78,7 +78,7 @@ private:
 
 public:
     WinInfo(Client* c, xcb_window_t window,
-            xcb_window_t rwin, const unsigned long pr[], int pr_size);
+            xcb_window_t rwin, NET::Properties properties, NET::Properties2 properties2);
     virtual void changeDesktop(int desktop) override;
     virtual void changeFullscreenMonitors(NETFullscreenMonitors topology) override;
     virtual void changeState(NET::States state, NET::States mask) override;
diff --git a/unmanaged.cpp b/unmanaged.cpp
index 66c925b2c0..de515a513b 100644
--- a/unmanaged.cpp
+++ b/unmanaged.cpp
@@ -63,13 +63,8 @@ bool Unmanaged::track(Window w)
     checkScreen();
     vis = attr.visual;
     bit_depth = attr.depth;
-    unsigned long properties[ 2 ];
-    properties[ NETWinInfo::PROTOCOLS ] =
-        NET::WMWindowType |
-        NET::WMPid;
-    properties[ NETWinInfo::PROTOCOLS2 ] =
-        NET::WM2Opacity;
-    info = new NETWinInfo(connection(), w, rootWindow(), properties, 2);
+    info = new NETWinInfo(connection(), w, rootWindow(),
+                          NET::WMWindowType | NET::WMPid, NET::WM2Opacity);
     getResourceClass();
     getWindowRole();
     getWmClientLeader();