1 files changed, 3 insertions, 2 deletions

diff --git a/source/cPiston.cpp b/source/cPiston.cpp
index 9c4363eeb..df9af6fb7 100644
--- a/source/cPiston.cpp
+++ b/source/cPiston.cpp
@@ -56,7 +56,8 @@ void cPiston::ExtendPiston( int pistx, int pisty, int pistz ) {
 	char pistonMeta = m_World->GetBlockMeta( pistx, pisty, pistz );

 	char isSticky = (char)(pistonBlock == E_BLOCK_STICKY_PISTON) * 8;

 	bool recalc = false;

-	if (pistonMeta < 6) {// only extend if piston is not already extended 

+	if ( (pistonMeta & 0x8) == 0x0 ) // only extend if piston is not already extended 

+	{

 		unsigned short dist = FirstPassthroughBlock(pistx, pisty, pistz, pistonMeta);

 		if(dist>9000) return; // too many blocks

 	

@@ -89,7 +90,7 @@ void cPiston::ExtendPiston( int pistx, int pisty, int pistz ) {
 		Action.m_Byte2	=	pistonMeta;

 

 		m_World->BroadcastToChunkOfBlock(pistx, pisty, pistz, &Action);

-		m_World->FastSetBlock( pistx, pisty, pistz, pistonBlock, pistonMeta | 8 );

+		m_World->FastSetBlock( pistx, pisty, pistz, pistonBlock, pistonMeta | 0x8 );

 

 		int extx = pistx;

 		int exty = pisty;