diff --git a/source/core/maptypes.h b/source/core/maptypes.h
index 15edac309..b9526de4c 100644
--- a/source/core/maptypes.h
+++ b/source/core/maptypes.h
@@ -466,7 +466,7 @@ struct spritetypebase
 	int16_t intangle;	// needs to be kept for SW's SP_TAG4
 	int16_t xvel;
 	int16_t yvel;
-	union { int16_t zvel, inittype; }; // inittype, type and flags are for Blood.
+	int16_t inittype; // was zvel. All accesses for that have been wrapped. inittype, type and flags are for Blood.
 	union { int16_t lotag, type; };
 	union { int16_t hitag, flags; };
 	int16_t extra;
diff --git a/source/games/sw/src/draw.cpp b/source/games/sw/src/draw.cpp
index 779781267..2c3951476 100644
--- a/source/games/sw/src/draw.cpp
+++ b/source/games/sw/src/draw.cpp
@@ -368,7 +368,7 @@ void DoMotionBlur(tspriteArray& tsprites, tspritetype const * const tsp)
     }
     else
     {
-        z_amt_per_pixel = IntToFixed((int)-tsp->zvel)/tsp->xvel;
+        z_amt_per_pixel = IntToFixed((int)-ownerActor->int_zvel())/tsp->xvel;
     }
 
     switch (ownerActor->user.motion_blur_dist)