diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index 465dbbc27..5eccce660 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -2741,33 +2741,19 @@ int Simulation::do_move(int i, int x, int y, float nxf, float nyf)
 	return result;
 }
 
-int Simulation::pn_junction_sprk(int x, int y, int pt)
-{
-	int r = pmap[y][x];
-	if (TYP(r) != pt)
-		return 0;
-	r >>= 8;
-	if (parts[r].type != pt)
-		return 0;
-	if (parts[r].life != 0)
-		return 0;
-
-	parts[r].ctype = pt;
-	part_change_type(r,x,y,PT_SPRK);
-	parts[r].life = 4;
-	return 1;
-}
-
 void Simulation::photoelectric_effect(int nx, int ny)//create sparks from PHOT when hitting PSCN and NSCN
 {
 	unsigned r = pmap[ny][nx];
 
-	if (TYP(r) == PT_PSCN) {
-		if (TYP(pmap[ny][nx-1]) == PT_NSCN ||
-		        TYP(pmap[ny][nx+1]) == PT_NSCN ||
-		        TYP(pmap[ny-1][nx]) == PT_NSCN ||
-		        TYP(pmap[ny+1][nx]) == PT_NSCN)
-			pn_junction_sprk(nx, ny, PT_PSCN);
+	if (TYP(r) == PT_PSCN)
+	{
+		if (TYP(pmap[ny][nx-1]) == PT_NSCN || TYP(pmap[ny][nx+1]) == PT_NSCN ||
+		        TYP(pmap[ny-1][nx]) == PT_NSCN ||  TYP(pmap[ny+1][nx]) == PT_NSCN)
+		{
+			parts[ID(r)].ctype = PT_PSCN;
+			part_change_type(ID(r), nx, ny, PT_SPRK);
+			parts[ID(r)].life = 4;
+		}
 	}
 }
 
diff --git a/src/simulation/Simulation.h b/src/simulation/Simulation.h
index 9652b97c9..ebb0856b0 100644
--- a/src/simulation/Simulation.h
+++ b/src/simulation/Simulation.h
@@ -127,7 +127,6 @@ public:
 	int is_blocking(int t, int x, int y);
 	int is_boundary(int pt, int x, int y);
 	int find_next_boundary(int pt, int *x, int *y, int dm, int *em);
-	int pn_junction_sprk(int x, int y, int pt);
 	void photoelectric_effect(int nx, int ny);
 	unsigned direction_to_map(float dx, float dy, int t);
 	int do_move(int i, int x, int y, float nxf, float nyf);