code cleanup: use BLI_RCT_SIZE macro

1 files changed, 1 insertions, 1 deletions

diff --git a/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp b/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp
index cef068ccbaa..1b8f857c2cb 100644
--- a/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp
+++ b/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp
@@ -458,7 +458,7 @@ extern "C" void StartKetsjiShell(struct bContext *C, struct ARegion *ar, rcti *c
 							// itself is unaware of the extra space, so we clear the whole region for it.
 							glClearColor(scene->gm.framing.col[0], scene->gm.framing.col[1], scene->gm.framing.col[2], 1.0f);
 							glViewport(ar->winrct.xmin, ar->winrct.ymin,
-								ar->winrct.xmax - ar->winrct.xmin, ar->winrct.ymax - ar->winrct.ymin);
+							           BLI_RCT_SIZE_X(&ar->winrct), BLI_RCT_SIZE_Y(&ar->winrct));
 							glClear(GL_COLOR_BUFFER_BIT);
 						}