diff --git a/src/gl/scene/gl_weapon.cpp b/src/gl/scene/gl_weapon.cpp
index 8edc12474c..78c32cc07e 100644
--- a/src/gl/scene/gl_weapon.cpp
+++ b/src/gl/scene/gl_weapon.cpp
@@ -437,7 +437,7 @@ void GLSceneDrawer::DrawPlayerSprites(sector_t * viewsector, bool hudModelStep)
 
 			if (psp->Flags & PSPF_ADDBOB)
 			{
-				sx += bobx;
+				sx += (psp->Flags & PSPF_MIRROR) ? -bobx : bobx;
 				sy += boby;
 			}