diff --git a/src/gui/game/GameView.cpp b/src/gui/game/GameView.cpp
index 96e4ba81f..abf973f1e 100644
--- a/src/gui/game/GameView.cpp
+++ b/src/gui/game/GameView.cpp
@@ -2305,7 +2305,8 @@ void GameView::OnDraw()
 				// only elements that use .tmp2 show it in the debug HUD
 				if (type == PT_CRAY || type == PT_DRAY || type == PT_EXOT || type == PT_LIGH || type == PT_SOAP || type == PT_TRON
 						|| type == PT_VIBR || type == PT_VIRS || type == PT_WARP || type == PT_LCRY || type == PT_CBNW || type == PT_TSNS
-						|| type == PT_DTEC || type == PT_LSNS || type == PT_PSTN || type == PT_LDTC || type == PT_VSNS || type == PT_LITH)
+						|| type == PT_DTEC || type == PT_LSNS || type == PT_PSTN || type == PT_LDTC || type == PT_VSNS || type == PT_LITH
+						|| type == PT_CONV)
 					sampleInfo << ", Tmp2: " << sample.particle.tmp2;
 
 				sampleInfo << ", Pressure: " << sample.AirPressure;
diff --git a/src/simulation/elements/CONV.cpp b/src/simulation/elements/CONV.cpp
index 19c0c2c37..2795f06eb 100644
--- a/src/simulation/elements/CONV.cpp
+++ b/src/simulation/elements/CONV.cpp
@@ -81,9 +81,9 @@ static int update(UPDATE_FUNC_ARGS)
 				if (x+rx>=0 && y+ry>=0 && x+rx<XRES && y+ry<YRES)
 				{
 					r = sim->photons[y+ry][x+rx];
-					if (!r || (restrictElement && TYP(r) != restrictElement))
+					if (!r || (restrictElement && ((TYP(r) == restrictElement) == (parts[i].tmp2 == 1))))
 						r = pmap[y+ry][x+rx];
-					if (!r || (restrictElement && TYP(r) != restrictElement))
+					if (!r || (restrictElement && ((TYP(r) == restrictElement) == (parts[i].tmp2 == 1))))
 						continue;
 					if (TYP(r) != PT_CONV && TYP(r) != PT_DMND && TYP(r) != ctype)
 					{