diff --git a/src/hwrenderer/scene/hw_sprites.cpp b/src/hwrenderer/scene/hw_sprites.cpp
index 17e794892..ac4389713 100644
--- a/src/hwrenderer/scene/hw_sprites.cpp
+++ b/src/hwrenderer/scene/hw_sprites.cpp
@@ -1164,6 +1164,7 @@ void GLSprite::ProcessParticle (HWDrawInfo *di, particle_t *particle, sector_t *
 	gltexture=nullptr;
 	topclip = LARGE_VALUE;
 	bottomclip = -LARGE_VALUE;
+	index = 0;
 
 	// [BB] Load the texture for round or smooth particles
 	if (gl_particles_style)