diff --git a/psrdada_cpp/effelsberg/edd/test/src/FftSpectrometerTester.cu b/psrdada_cpp/effelsberg/edd/test/src/FftSpectrometerTester.cu
index 3f0cad292485521d14a5d388d7d995c8224535a1..2ccb98ccc02b6facb30069cf8ac365629216b5b5 100644
--- a/psrdada_cpp/effelsberg/edd/test/src/FftSpectrometerTester.cu
+++ b/psrdada_cpp/effelsberg/edd/test/src/FftSpectrometerTester.cu
@@ -54,6 +54,8 @@ void FftSpectrometerTester::performance_test(
 TEST_F(FftSpectrometerTester, simple_exec_test)
 {
     performance_test(1024, 16, 128, 12);
+    performance_test(1024, 16, 128, 8);
+    performance_test(1024, 16, 128, 10);
 }
 
 } //namespace test