diff --git a/engine/sw/d_part.c b/engine/sw/d_part.c
index 0b50b2edf..570f94be8 100644
--- a/engine/sw/d_part.c
+++ b/engine/sw/d_part.c
@@ -21,6 +21,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "quakedef.h"
 #include "d_local.h"
+#include "r_local.h"
 
 vec3_t			r_pright, r_pup, r_ppn;
 
diff --git a/engine/sw/r_local.h b/engine/sw/r_local.h
index 0ee08ab60..d25701adc 100644
--- a/engine/sw/r_local.h
+++ b/engine/sw/r_local.h
@@ -316,7 +316,7 @@ void SWR_NetGraph (void);
 
 qbyte *SWMod_LeafPVS (model_t *model, mleaf_t *leaf, qbyte *buffer);
 
-void D_DrawSparkTrans (struct particle_s *pparticle, vec3_t src, vec3_t dest, int blendmode);
+void D_DrawSparkTrans (vec3_t src, vec3_t dest, float palpha, unsigned int pcolour, blendmode_t blendmode);
 
 
 void D_Shutdown (void);
diff --git a/engine/sw/r_main.c b/engine/sw/r_main.c
index 17514c2be..7bd538e55 100644
--- a/engine/sw/r_main.c
+++ b/engine/sw/r_main.c
@@ -688,7 +688,7 @@ void SWR_DrawBeam(entity_t *e)
 	for (; len>=0; len--)
 	{
 		VectorAdd(o1, dir, o2);
-		D_DrawSparkTrans (o1, o2, 1, 0);
+		D_DrawSparkTrans (o1, o2, 1, 0, BM_BLEND);
 		VectorCopy(o2, o1);
 	}
 }