diff --git a/test/c/Results/fft b/test/c/Results/fft
index e08b2daab555f4e89529ec4bb3365daae3fd700e..a48608b0408b0142e2db103d22c7832d846b3c44 100644
--- a/test/c/Results/fft
+++ b/test/c/Results/fft
@@ -1 +1 @@
-262144 points, error 3.20142e-10
+262144 points, result OK
diff --git a/test/c/fft.c b/test/c/fft.c
index 48f16561f703f8857e70a8647ed8fa5953f5ea3e..884a8568596d973b21b98f4b7191e612733a43f8 100644
--- a/test/c/fft.c
+++ b/test/c/fft.c
@@ -186,6 +186,6 @@ int main(int argc, char ** argv)
   }
   zm = zr;
   if (zr < zi) zm = zi;
-  printf("%d points, error %g\n", np, zm);
+  printf("%d points, %s\n", np, zm < 1e-9 ? "result OK" : "WRONG result");
   return 0;
 }