diff --git a/tests/tst_aec.c b/tests/tst_aec.c
index e8b50767..4c8d621a 100644
--- a/tests/tst_aec.c
+++ b/tests/tst_aec.c
@@ -149,7 +149,7 @@ main()
 	for (i = 0; i < DATA_LEN; i++)
 	{
 	    /* printf("%g %g\n", fld[i], fld_in[i]); */
-	    if (fld[i] != fld_in[i])
+	    if (abs(fld[i] - fld_in[i]) >= EPSILON)
 		return G2C_ERROR;
 	}
     }