diff --git a/src/simulation/elements/AMTR.cpp b/src/simulation/elements/AMTR.cpp
index f62670ebc..6f8af0253 100644
--- a/src/simulation/elements/AMTR.cpp
+++ b/src/simulation/elements/AMTR.cpp
@@ -31,7 +31,7 @@ Element_AMTR::Element_AMTR()
 	Description = "Anti-Matter, destroys a majority of particles.";
 	
 	State = ST_NONE;
-	Properties = TYPE_PART;
+	Properties = TYPE_GAS;
 	
 	LowPressure = IPL;
 	LowPressureTransition = NT;
@@ -48,8 +48,8 @@ Element_AMTR::Element_AMTR()
 
 //#TPT-Directive ElementHeader Element_AMTR static int update(UPDATE_FUNC_ARGS)
 int Element_AMTR::update(UPDATE_FUNC_ARGS)
- {
-	 int r, rx, ry, rt;
+{
+	int r, rx, ry, rt;
 	for (rx=-1; rx<2; rx++)
 		for (ry=-1; ry<2; ry++)
 			if (BOUNDS_CHECK && (rx || ry))
diff --git a/src/simulation/elements/MORT.cpp b/src/simulation/elements/MORT.cpp
index e5ef6eac6..b34b11bf0 100644
--- a/src/simulation/elements/MORT.cpp
+++ b/src/simulation/elements/MORT.cpp
@@ -31,7 +31,7 @@ Element_MORT::Element_MORT()
 	Description = "Steam Train.";
 	
 	State = ST_NONE;
-	Properties = TYPE_PART;
+	Properties = TYPE_GAS;
 	
 	LowPressure = IPL;
 	LowPressureTransition = NT;
@@ -48,7 +48,7 @@ Element_MORT::Element_MORT()
 
 //#TPT-Directive ElementHeader Element_MORT static int update(UPDATE_FUNC_ARGS)
 int Element_MORT::update(UPDATE_FUNC_ARGS)
- {
+{
 	sim->create_part(-1, x, y-1, PT_SMKE);
 	return 0;
 }
diff --git a/src/simulation/elements/THDR.cpp b/src/simulation/elements/THDR.cpp
index 507db2df8..ba9e32c99 100644
--- a/src/simulation/elements/THDR.cpp
+++ b/src/simulation/elements/THDR.cpp
@@ -31,7 +31,7 @@ Element_THDR::Element_THDR()
 	Description = "Lightning! Very hot, inflicts damage upon most materials, and transfers current to metals.";
 	
 	State = ST_NONE;
-	Properties = TYPE_PART;
+	Properties = TYPE_ENERGY;
 	
 	LowPressure = IPL;
 	LowPressureTransition = NT;