diff --git a/src/pulsecore/svolume_arm.c b/src/pulsecore/svolume_arm.c
index 455d746b6..f938e57df 100644
--- a/src/pulsecore/svolume_arm.c
+++ b/src/pulsecore/svolume_arm.c
@@ -151,7 +151,7 @@ static void run_test(void) {
     memcpy(samples_orig, samples, sizeof(samples));
 
     for (i = 0; i < CHANNELS; i++)
-        volumes[i] = PA_CLAMP_VOLUME(rand() >> 1);
+        volumes[i] = PA_CLAMP_VOLUME(rand() >> 15);
     for (padding = 0; padding < PADDING; padding++, i++)
         volumes[i] = volumes[padding];
 
diff --git a/src/pulsecore/svolume_mmx.c b/src/pulsecore/svolume_mmx.c
index 43c1058b5..f9fc1752d 100644
--- a/src/pulsecore/svolume_mmx.c
+++ b/src/pulsecore/svolume_mmx.c
@@ -272,7 +272,7 @@ static void run_test(void) {
     memcpy(samples_orig, samples, sizeof(samples));
 
     for (i = 0; i < CHANNELS; i++)
-        volumes[i] = PA_CLAMP_VOLUME(rand() >> 1);
+        volumes[i] = PA_CLAMP_VOLUME(rand() >> 15);
         /* volumes[i] = 0x0000ffff; */
     for (padding = 0; padding < PADDING; padding++, i++)
         volumes[i] = volumes[padding];
diff --git a/src/pulsecore/svolume_orc.c b/src/pulsecore/svolume_orc.c
index 86f843e89..b178bbfd0 100644
--- a/src/pulsecore/svolume_orc.c
+++ b/src/pulsecore/svolume_orc.c
@@ -75,7 +75,7 @@ static void run_test(void) {
     memcpy(samples_orig, samples, sizeof(samples));
 
     for (i = 0; i < CHANNELS; i++)
-        volumes[i] = PA_CLAMP_VOLUME(rand() >> 1);
+        volumes[i] = PA_CLAMP_VOLUME(rand() >> 15);
     for (padding = 0; padding < PADDING; padding++, i++)
         volumes[i] = volumes[padding];
 
diff --git a/src/pulsecore/svolume_sse.c b/src/pulsecore/svolume_sse.c
index 89414c6bb..fe08de423 100644
--- a/src/pulsecore/svolume_sse.c
+++ b/src/pulsecore/svolume_sse.c
@@ -282,7 +282,7 @@ static void run_test(void) {
     memcpy(samples_orig, samples, sizeof(samples));
 
     for (i = 0; i < CHANNELS; i++)
-        volumes[i] = PA_CLAMP_VOLUME(rand() >> 1);
+        volumes[i] = PA_CLAMP_VOLUME(rand() >> 15);
     for (padding = 0; padding < PADDING; padding++, i++)
         volumes[i] = volumes[padding];