diff --git a/tests/functional/test_mips64el_malta.py b/tests/functional/test_mips64el_malta.py
index 24ebcdb9c1..6d1195d362 100755
--- a/tests/functional/test_mips64el_malta.py
+++ b/tests/functional/test_mips64el_malta.py
@@ -159,7 +159,7 @@ class MaltaMachineFramebuffer(LinuxKernelTest):
         loc = np.where(result >= match_threshold)
         tuxlogo_count = 0
         h, w = tuxlogo_bgr.shape[:2]
-        debug_png = os.getenv('AVOCADO_CV2_SCREENDUMP_PNG_PATH')
+        debug_png = os.getenv('QEMU_TEST_CV2_SCREENDUMP_PNG_PATH')
         for tuxlogo_count, pt in enumerate(zip(*loc[::-1]), start=1):
             logger.debug('found Tux at position (x, y) = %s', pt)
             cv2.rectangle(screendump_bgr, pt,