diff --git a/includes/powder.h b/includes/powder.h
index feb2cf936..bc675e53a 100644
--- a/includes/powder.h
+++ b/includes/powder.h
@@ -391,7 +391,7 @@ static const part_type ptypes[PT_NUM] =
 	{"WOOD",	PIXPACK(0xC0A040),	0.0f,	0.00f * CFDS,	0.90f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	20,		0,	0,	15,	1,	100,	SC_SOLIDS,		R_TEMP+0.0f	+273.15f,	164,	"Solid. Flammable.", ST_SOLID, TYPE_SOLID, NULL},
 	{"NEUT",	PIXPACK(0x20E0FF),	0.0f,	0.00f * CFDS,	1.00f,	1.00f,	-0.99f,	0.0f,	0.01f,	0.002f	* CFDS,	0,	0,		0,	0,	0,	1,	-1,		SC_NUCLEAR,		R_TEMP+4.0f	+273.15f,	60,		"Neutrons. Interact with matter in odd ways.", ST_GAS, TYPE_ENERGY, &update_NEUT},
 	{"PLUT",	PIXPACK(0x407020),	0.4f,	0.01f * CFDS,	0.99f,	0.95f,	0.0f,	0.4f,	0.00f,	0.000f	* CFDS,	1,	0,		0,	0,	0,	1,	90,		SC_NUCLEAR,		R_TEMP+4.0f	+273.15f,	251,	"Heavy particles. Fissile. Generates neutrons under pressure.", ST_SOLID, TYPE_PART|PROP_NEUTPENETRATE|PROP_RADIOACTIVE, &update_PLUT},
-	{"PLNT",	PIXPACK(0x0CAC00),	0.0f,	0.00f * CFDS,	0.95f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	20,		0,	0,	10,	1,	100,	SC_SOLIDS,		R_TEMP+0.0f	+273.15f,	65,		"Plant, drinks water and grows.", ST_SOLID, TYPE_SOLID, &update_PLNT},
+	{"PLNT",	PIXPACK(0x0CAC00),	0.0f,	0.00f * CFDS,	0.95f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	20,		0,	0,	10,	1,	100,	SC_SOLIDS,		R_TEMP+0.0f	+273.15f,	65,		"Plant, drinks water and grows.", ST_SOLID, TYPE_SOLID|PROP_NEUTPENETRATE, &update_PLNT},
 	{"ACID",	PIXPACK(0xED55FF),	0.6f,	0.01f * CFDS,	0.98f,	0.95f,	0.0f,	0.1f,	0.00f,	0.000f	* CFDS,	2,	40,		0,	0,	1,	1,	10,		SC_LIQUID,		R_TEMP+0.0f	+273.15f,	34,		"Dissolves almost everything.", ST_LIQUID, TYPE_LIQUID, &update_ACID},
 	{"VOID",	PIXPACK(0x790B0B),	0.0f,	0.00f * CFDS,	1.00f,	0.00f,	0.0f,	0.0f,	0.00f,	-0.0003f* CFDS,	0,	0,		0,	0,	0,	1,	100,	SC_SPECIAL,		R_TEMP+0.0f	+273.15f,	251,	"Hole, will drain away any particles.", ST_SOLID, TYPE_SOLID, NULL},
 	{"WTRV",	PIXPACK(0xA0A0FF),	1.0f,	0.01f * CFDS,	0.99f,	0.30f,	-0.1f,	-0.1f,	0.75f,	0.0003f	* CFDS,	0,	0,		0,	0,	4,	1,	1,		SC_GAS,			R_TEMP+100.0f+273.15f,	48,		"Steam, heats up air, produced from hot water.", ST_GAS, TYPE_GAS, &update_WTRV},