diff --git a/app/tests/test-ui.c b/app/tests/test-ui.c
index 61b245c7fd..1dd996ac7d 100644
--- a/app/tests/test-ui.c
+++ b/app/tests/test-ui.c
@@ -64,7 +64,7 @@
 #include "gimp-app-test-utils.h"
 
 
-#define GIMP_UI_WINDOW_POSITION_EPSILON 25
+#define GIMP_UI_WINDOW_POSITION_EPSILON 30
 #define GIMP_UI_POSITION_EPSILON        1
 #define GIMP_UI_ZOOM_EPSILON            0.01