diff --git a/src/elements/prti.cpp b/src/elements/prti.cpp
index f5b237490..384fd7e9f 100644
--- a/src/elements/prti.cpp
+++ b/src/elements/prti.cpp
@@ -29,6 +29,9 @@ int update_PRTI(UPDATE_FUNC_ARGS) {
 						continue;
 				}
 
+				if ((r&0xFF)==PT_STKM || (r&0xFF)==PT_STKM2 || (r&0xFF)==PT_FIGH)
+					continue;// Handling these is a bit more complicated, and is done in STKM_interact()
+
 				if ((r&0xFF) == PT_SOAP)
 					sim->detach(r>>8);
 
diff --git a/src/elements/prto.cpp b/src/elements/prto.cpp
index 32e72514a..bbef6bed6 100644
--- a/src/elements/prto.cpp
+++ b/src/elements/prto.cpp
@@ -47,8 +47,31 @@ int update_PRTO(UPDATE_FUNC_ARGS) {
 								sim->player.spwn = 0;
 							if (sim->portalp[parts[i].tmp][randomness][nnx].type==PT_STKM2)
 								sim->player2.spwn = 0;
+							if (sim->portalp[parts[i].tmp][randomness][nnx].type==PT_FIGH)
+							{
+								sim->fighcount--;
+								sim->fighters[(unsigned char)sim->portalp[parts[i].tmp][randomness][nnx].tmp].spwn = 0;
+							}
 							np = sim->create_part(-1, x+rx, y+ry, sim->portalp[parts[i].tmp][randomness][nnx].type);
-							if (np<0) continue;
+							if (np<0)
+							{
+								if (sim->portalp[parts[i].tmp][randomness][nnx].type==PT_STKM)
+									sim->player.spwn = 1;
+								if (sim->portalp[parts[i].tmp][randomness][nnx].type==PT_STKM2)
+									sim->player2.spwn = 1;
+								if (sim->portalp[parts[i].tmp][randomness][nnx].type==PT_FIGH)
+								{
+									sim->fighcount++;
+									sim->fighters[(unsigned char)sim->portalp[parts[i].tmp][randomness][nnx].tmp].spwn = 1;
+								}
+								continue;
+							}
+							if (parts[np].type==PT_FIGH)
+							{
+								// Release the fighters[] element allocated by create_part, the one reserved when the fighter went into the portal will be used
+								sim->fighters[(unsigned char)parts[np].tmp].spwn = 0;
+								sim->fighters[(unsigned char)sim->portalp[parts[i].tmp][randomness][nnx].tmp].spwn = 1;
+							}
 							parts[np] = sim->portalp[parts[i].tmp][randomness][nnx];
 							parts[np].x = x+rx;
 							parts[np].y = y+ry;
diff --git a/src/elements/stkm.cpp b/src/elements/stkm.cpp
index 68ef1ed9a..e7eecf401 100644
--- a/src/elements/stkm.cpp
+++ b/src/elements/stkm.cpp
@@ -453,7 +453,10 @@ void STKM_interact(Simulation * sim, playerst* playerp, int i, int x, int y)
 				{
 					sim->portalp[sim->parts[r>>8].tmp][count][nnx] = sim->parts[i];
 					sim->kill_part(i);
-					playerp->spwn = 1;//stop SPWN creating a new STKM while he is in portal
+					//stop new STKM/fighters being created to replace the ones in the portal:
+					playerp->spwn = 1;
+					if (sim->portalp[sim->parts[r>>8].tmp][count][nnx].type==PT_FIGH)
+						sim->fighcount++;
 					break;
 				}
 		}