diff --git a/libspeexdsp/testresample2.c b/libspeexdsp/testresample2.c
index db865556..26cf56e9 100644
--- a/libspeexdsp/testresample2.c
+++ b/libspeexdsp/testresample2.c
@@ -40,6 +40,7 @@
 #include <stdlib.h>
 
 #define PERIOD 32
+#define CHANNELS 2
 #define INBLOCK 1024
 #define RATE 48000
 
@@ -48,7 +49,7 @@ int main()
    spx_uint32_t i;
    float *fin, *fout;
    int rate = 1000, off = 0, avail = INBLOCK;
-   SpeexResamplerState *st = speex_resampler_init(1, RATE, RATE, 4, NULL);
+   SpeexResamplerState *st = speex_resampler_init(CHANNELS, RATE, RATE, 4, NULL);
    speex_resampler_set_rate(st, RATE, rate);
    speex_resampler_skip_zeros(st);