diff --git a/test/issue-2.coffee b/test/issue-2.coffee
index bb9505d..0de35d4 100644
--- a/test/issue-2.coffee
+++ b/test/issue-2.coffee
@@ -3,10 +3,10 @@ require '../lib/test-tools'
 describe 'FFT', ->
   describe '#forward', ->
     it 'should not segfault on odd N', ->
-      fft = new FFT(3)
-      fft.forward(F(3), F(3), F(3))
+      fft = new FFT(5)
+      fft.forward(F(5), F(5), F(5))
 
   describe '#inverse', ->
     it 'should not segfault on odd N', ->
-      fft = new FFT(3)
-      fft.inverse(F(3), F(3), F(3))
+      fft = new FFT(5)
+      fft.inverse(F(5), F(5), F(5))