diff --git a/src/gl/scene/gl_drawinfo.cpp b/src/gl/scene/gl_drawinfo.cpp
index d1dd60c4f..e4722b3db 100644
--- a/src/gl/scene/gl_drawinfo.cpp
+++ b/src/gl/scene/gl_drawinfo.cpp
@@ -536,7 +536,7 @@ void GLDrawList::SortSpriteIntoWall(SortNode * head,SortNode * sort)
 
 		const bool drawBillboardFacingCamera = gl_billboard_faces_camera;
 		// [Nash] has +ROLLSPRITE
-		const bool rotated = (ss->actor != nullptr && ss->actor->renderflags & RF_ROLLSPRITE | RF_WALLSPRITE | RF_FLATSPRITE);
+		const bool rotated = (ss->actor != nullptr && ss->actor->renderflags & (RF_ROLLSPRITE | RF_WALLSPRITE | RF_FLATSPRITE));
 
 		// cannot sort them at the moment. This requires more complex splitting.
 		if (drawWithXYBillboard || drawBillboardFacingCamera || rotated)
diff --git a/src/gl/scene/gl_wall.h b/src/gl/scene/gl_wall.h
index 143029ba7..bdee5761f 100644
--- a/src/gl/scene/gl_wall.h
+++ b/src/gl/scene/gl_wall.h
@@ -66,7 +66,7 @@ struct GLSeg
 		// we do not use the vector math inlines here because they are not optimized for speed but accuracy in the playsim
 		float x = y2 - y1;
 		float y = x1 - x2;
-		float length = sqrt(x*x + y*y);
+		float length = sqrtf(x*x + y*y);
 		return FVector3(x / length, 0, y / length);
 	}
 };