diff --git a/src/pulsecore/svolume_arm.c b/src/pulsecore/svolume_arm.c
index 12660dd48..a028b8272 100644
--- a/src/pulsecore/svolume_arm.c
+++ b/src/pulsecore/svolume_arm.c
@@ -130,7 +130,7 @@ pa_volume_s16ne_arm (int16_t *samples, int32_t *volumes, unsigned channels, unsi
 
 #ifdef RUN_TEST
 #define CHANNELS 2
-#define SAMPLES 1023
+#define SAMPLES 1022
 #define TIMES 1000
 #define PADDING 16
 
diff --git a/src/pulsecore/svolume_mmx.c b/src/pulsecore/svolume_mmx.c
index 5bfe6d4f3..2ffd608ba 100644
--- a/src/pulsecore/svolume_mmx.c
+++ b/src/pulsecore/svolume_mmx.c
@@ -243,7 +243,7 @@ pa_volume_s16re_mmx (int16_t *samples, int32_t *volumes, unsigned channels, unsi
 
 #ifdef RUN_TEST
 #define CHANNELS 2
-#define SAMPLES 1021
+#define SAMPLES 1022
 #define TIMES 1000
 #define PADDING 16
 
diff --git a/src/pulsecore/svolume_sse.c b/src/pulsecore/svolume_sse.c
index f3aa1edb2..ff2a12ee2 100644
--- a/src/pulsecore/svolume_sse.c
+++ b/src/pulsecore/svolume_sse.c
@@ -255,7 +255,7 @@ pa_volume_s16re_sse2 (int16_t *samples, int32_t *volumes, unsigned channels, uns
 
 #ifdef RUN_TEST
 #define CHANNELS 2
-#define SAMPLES 1021
+#define SAMPLES 1022
 #define TIMES 1000
 #define PADDING 16