diff --git a/d3xp/Actor.cpp b/d3xp/Actor.cpp
index 135bae3..107e506 100644
--- a/d3xp/Actor.cpp
+++ b/d3xp/Actor.cpp
@@ -458,7 +458,7 @@ idActor::idActor( void ) {
 
 	waitState			= "";
 
-	blink_anim			= NULL;
+	blink_anim			= 0;
 	blink_time			= 0;
 	blink_min			= 0;
 	blink_max			= 0;
diff --git a/d3xp/Grabber.cpp b/d3xp/Grabber.cpp
index 7c9dbe9..34b8067 100644
--- a/d3xp/Grabber.cpp
+++ b/d3xp/Grabber.cpp
@@ -276,7 +276,7 @@ void idGrabber::StartDrag( idEntity *grabEnt, int id ) {
 			aiEnt->StartRagdoll();
 		}
 	} else if ( grabEnt->IsType( idMoveableItem::Type ) ) {
-		grabEnt->PostEventMS( &EV_Touch, 250, thePlayer, NULL );
+		grabEnt->PostEventMS( &EV_Touch, 250, thePlayer, 0 );
 	}
 
 	// Get the current physics object to manipulate
diff --git a/d3xp/Item.cpp b/d3xp/Item.cpp
index 524952d..34713c1 100644
--- a/d3xp/Item.cpp
+++ b/d3xp/Item.cpp
@@ -294,7 +294,7 @@ void idItem::Spawn( void ) {
 		if ( !ent ) {
 			gameLocal.Error( "Item couldn't find owner '%s'", giveTo.c_str() );
 		}
-		PostEventMS( &EV_Touch, 0, ent, NULL );
+		PostEventMS( &EV_Touch, 0, ent, 0 );
 	}
 
 #ifdef CTF
diff --git a/d3xp/Trigger.cpp b/d3xp/Trigger.cpp
index e15c021..52ab270 100644
--- a/d3xp/Trigger.cpp
+++ b/d3xp/Trigger.cpp
@@ -1303,10 +1303,10 @@ void idTrigger_Flag::Event_Touch( idEntity *other, trace_t *trace ) {
 				flag->PostEventMS( eventFlag, 0 );
 			break;
 			case 1 :
-				flag->PostEventMS( eventFlag, 0, NULL );
+				flag->PostEventMS( eventFlag, 0, 0 );
 			break;
 			case 2 :
-				flag->PostEventMS( eventFlag, 0, NULL, NULL );
+				flag->PostEventMS( eventFlag, 0, 0, 0 );
 			break;
 		}
 
diff --git a/d3xp/ai/AI_events.cpp b/d3xp/ai/AI_events.cpp
index 6d11607..0c000e5 100644
--- a/d3xp/ai/AI_events.cpp
+++ b/d3xp/ai/AI_events.cpp
@@ -2489,7 +2489,7 @@ void idAI::Event_ThrowMoveable( void ) {
 	}
 	if ( moveable ) {
 		moveable->Unbind();
-		moveable->PostEventMS( &EV_SetOwner, 200, NULL );
+		moveable->PostEventMS( &EV_SetOwner, 200, 0 );
 	}
 }
 
@@ -2510,7 +2510,7 @@ void idAI::Event_ThrowAF( void ) {
 	}
 	if ( af ) {
 		af->Unbind();
-		af->PostEventMS( &EV_SetOwner, 200, NULL );
+		af->PostEventMS( &EV_SetOwner, 200, 0 );
 	}
 }
 
diff --git a/game/Actor.cpp b/game/Actor.cpp
index ec20ab7..f5d26ef 100644
--- a/game/Actor.cpp
+++ b/game/Actor.cpp
@@ -442,7 +442,7 @@ idActor::idActor( void ) {
 
 	waitState			= "";
 
-	blink_anim			= NULL;
+	blink_anim			= 0;
 	blink_time			= 0;
 	blink_min			= 0;
 	blink_max			= 0;
diff --git a/game/Item.cpp b/game/Item.cpp
index fa0f28d..c5ca917 100644
--- a/game/Item.cpp
+++ b/game/Item.cpp
@@ -294,7 +294,7 @@ void idItem::Spawn( void ) {
 		if ( !ent ) {
 			gameLocal.Error( "Item couldn't find owner '%s'", giveTo.c_str() );
 		}
-		PostEventMS( &EV_Touch, 0, ent, NULL );
+		PostEventMS( &EV_Touch, 0, ent, 0 );
 	}
 
 	if ( spawnArgs.GetBool( "spin" ) || gameLocal.isMultiplayer ) {
diff --git a/game/ai/AI_events.cpp b/game/ai/AI_events.cpp
index fc96076..984cd6f 100644
--- a/game/ai/AI_events.cpp
+++ b/game/ai/AI_events.cpp
@@ -2335,7 +2335,7 @@ void idAI::Event_ThrowMoveable( void ) {
 	}
 	if ( moveable ) {
 		moveable->Unbind();
-		moveable->PostEventMS( &EV_SetOwner, 200, NULL );
+		moveable->PostEventMS( &EV_SetOwner, 200, 0 );
 	}
 }
 
@@ -2356,7 +2356,7 @@ void idAI::Event_ThrowAF( void ) {
 	}
 	if ( af ) {
 		af->Unbind();
-		af->PostEventMS( &EV_SetOwner, 200, NULL );
+		af->PostEventMS( &EV_SetOwner, 200, 0 );
 	}
 }
 
diff --git a/idlib/Dict.cpp b/idlib/Dict.cpp
index c49a5ca..8130226 100644
--- a/idlib/Dict.cpp
+++ b/idlib/Dict.cpp
@@ -475,7 +475,7 @@ int idDict::FindKeyIndex( const char *key ) const {
 
 	if ( key == NULL || key[0] == '\0' ) {
 		idLib::common->DWarning( "idDict::FindKeyIndex: empty key" );
-		return NULL;
+		return 0;
 	}
 
 	int hash = argHash.GenerateKey( key, false );