Index: uspace/app/trace/ipcp.c
===================================================================
--- uspace/app/trace/ipcp.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/app/trace/ipcp.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -98,6 +98,6 @@
 	.key_hash = pending_call_key_hash,
 	.key_equal = pending_call_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/app/trace/proto.c
===================================================================
--- uspace/app/trace/proto.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/app/trace/proto.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -79,6 +79,6 @@
 	.key_hash = srv_proto_key_hash,
 	.key_equal = srv_proto_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
@@ -105,6 +105,6 @@
 	.key_hash = method_oper_key_hash,
 	.key_equal = method_oper_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/lib/block/block.c
===================================================================
--- uspace/lib/block/block.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/lib/block/block.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -255,6 +255,6 @@
 	.key_hash = cache_key_hash,
 	.key_equal = cache_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/lib/c/generic/async.c
===================================================================
--- uspace/lib/c/generic/async.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/lib/c/generic/async.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -416,6 +416,6 @@
 	.key_hash = client_key_hash,
 	.key_equal = client_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
@@ -452,6 +452,6 @@
 	.key_hash = conn_key_hash,
 	.key_equal = conn_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/lib/nic/src/nic_addr_db.c
===================================================================
--- uspace/lib/nic/src/nic_addr_db.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/lib/nic/src/nic_addr_db.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -107,5 +107,5 @@
 	.key_hash = nic_addr_key_hash,
 	.key_equal = nic_addr_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = nic_addr_removed
 };
Index: uspace/srv/devman/devman.c
===================================================================
--- uspace/srv/devman/devman.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/devman/devman.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -122,6 +122,6 @@
 	.key_hash = handle_key_hash,
 	.key_equal = devman_devices_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
@@ -130,6 +130,6 @@
 	.key_hash = handle_key_hash,
 	.key_equal = devman_functions_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
@@ -138,6 +138,6 @@
 	.key_hash = service_id_key_hash,
 	.key_equal = loc_functions_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/srv/fs/cdfs/cdfs_ops.c
===================================================================
--- uspace/srv/fs/cdfs/cdfs_ops.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/cdfs/cdfs_ops.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -267,5 +267,5 @@
 	.key_hash = nodes_key_hash,
 	.key_equal = nodes_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = nodes_remove_callback
 };
Index: uspace/srv/fs/exfat/exfat_idx.c
===================================================================
--- uspace/srv/fs/exfat/exfat_idx.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/exfat/exfat_idx.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -156,6 +156,6 @@
 	.key_hash = pos_key_hash,
 	.key_equal = pos_key_equal,
-	.equal = 0,
-	.remove_callback = 0,
+	.equal = NULL,
+	.remove_callback = NULL,
 };
 
@@ -202,5 +202,5 @@
 	.key_hash = idx_key_hash,
 	.key_equal = idx_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = idx_remove_callback,
 };
Index: uspace/srv/fs/ext2fs/ext2fs_ops.c
===================================================================
--- uspace/srv/fs/ext2fs/ext2fs_ops.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/ext2fs/ext2fs_ops.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -157,6 +157,6 @@
 	.key_hash = open_nodes_key_hash,
 	.key_equal = open_nodes_key_equal,
-	.equal = 0,
-	.remove_callback = 0,
+	.equal = NULL,
+	.remove_callback = NULL,
 };
 
Index: uspace/srv/fs/fat/fat_idx.c
===================================================================
--- uspace/srv/fs/fat/fat_idx.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/fat/fat_idx.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -156,6 +156,6 @@
 	.key_hash = pos_key_hash,
 	.key_equal = pos_key_equal,
-	.equal = 0,
-	.remove_callback = 0,
+	.equal = NULL,
+	.remove_callback = NULL,
 };
 
@@ -202,5 +202,5 @@
 	.key_hash = idx_key_hash,
 	.key_equal = idx_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = idx_remove_callback,
 };
Index: uspace/srv/fs/locfs/locfs_ops.c
===================================================================
--- uspace/srv/fs/locfs/locfs_ops.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/locfs/locfs_ops.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -99,5 +99,5 @@
 	.key_hash = services_key_hash,
 	.key_equal = services_key_equal,
-	.equal = 0, 
+	.equal = NULL, 
 	.remove_callback = services_remove_callback
 };
Index: uspace/srv/fs/mfs/mfs_ops.c
===================================================================
--- uspace/srv/fs/mfs/mfs_ops.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/mfs/mfs_ops.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -122,6 +122,6 @@
 	.key_hash = open_nodes_key_hash,
 	.key_equal = open_nodes_key_equal,
-	.equal = 0,
-	.remove_callback = 0,
+	.equal = NULL,
+	.remove_callback = NULL,
 };
 
Index: uspace/srv/fs/tmpfs/tmpfs_ops.c
===================================================================
--- uspace/srv/fs/tmpfs/tmpfs_ops.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/tmpfs/tmpfs_ops.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -196,5 +196,5 @@
 	.key_hash = nodes_key_hash,
 	.key_equal = nodes_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = nodes_remove_callback
 };
Index: uspace/srv/hid/input/gsp.c
===================================================================
--- uspace/srv/hid/input/gsp.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/hid/input/gsp.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -87,6 +87,6 @@
 	.key_hash = trans_key_hash,
 	.key_equal = trans_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/srv/ns/service.c
===================================================================
--- uspace/srv/ns/service.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/ns/service.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -72,6 +72,6 @@
 	.key_hash = service_key_hash,
 	.key_equal = service_key_equal,
-	.equal = 0,
-	.remove_callback = 0
+	.equal = NULL,
+	.remove_callback = NULL
 };
 
Index: uspace/srv/ns/task.c
===================================================================
--- uspace/srv/ns/task.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/ns/task.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -90,5 +90,5 @@
 	.key_hash = task_key_hash,
 	.key_equal = task_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = task_remove
 };
@@ -141,5 +141,5 @@
 	.key_hash = p2i_key_hash,
 	.key_equal = p2i_key_equal,
-	.equal = 0,
+	.equal = NULL,
 	.remove_callback = p2i_remove
 };
Index: uspace/srv/vfs/vfs_node.c
===================================================================
--- uspace/srv/vfs/vfs_node.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/vfs/vfs_node.c	(revision 4e00f8748907db19e8c6b776b1d4c98f5e411035)
@@ -69,6 +69,6 @@
 	.key_hash = nodes_key_hash,
 	.key_equal = nodes_key_equal,
-	.equal = 0,
-	.remove_callback = 0,
+	.equal = NULL,
+	.remove_callback = NULL,
 };