diff --git a/src/draw/sw/lv_draw_sw_line.c b/src/draw/sw/lv_draw_sw_line.c
index cd6a5fcf03..2e6a8d1dc2 100644
--- a/src/draw/sw/lv_draw_sw_line.c
+++ b/src/draw/sw/lv_draw_sw_line.c
@@ -65,8 +65,8 @@ void lv_draw_sw_line(lv_draw_unit_t * draw_unit, const lv_draw_line_dsc_t * dsc)
     if(!is_common) return;
 
     LV_PROFILER_DRAW_BEGIN;
-    if(dsc->p1.y == dsc->p2.y) draw_line_hor(draw_unit, dsc);
-    else if(dsc->p1.x == dsc->p2.x) draw_line_ver(draw_unit, dsc);
+    if((int32_t)dsc->p1.y == (int32_t)dsc->p2.y) draw_line_hor(draw_unit, dsc);
+    else if((int32_t)dsc->p1.x == (int32_t)dsc->p2.x) draw_line_ver(draw_unit, dsc);
     else draw_line_skew(draw_unit, dsc);
 
     if(dsc->round_end || dsc->round_start) {