diff --git a/tests/checkasm/llviddsp.c b/tests/checkasm/llviddsp.c
index 9f8de65df4..0552e98106 100644
--- a/tests/checkasm/llviddsp.c
+++ b/tests/checkasm/llviddsp.c
@@ -195,9 +195,13 @@ static void check_add_gradient_pred(LLVidDSPContext *c, int w) {
 void checkasm_check_llviddsp(void)
 {
     LLVidDSPContext c;
-    int width = 16 * av_clip(rnd(), 16, 128);
+    static int saved_width = 0;
+    int width = saved_width;
     int accRnd = rnd() & 0xFF;
 
+    if (!width)
+        saved_width = width = 16 * av_clip(rnd(), 16, 128);
+
     ff_llviddsp_init(&c);
 
     check_add_bytes(&c, width);