--- a/src/pulsecore/memblock.c
+++ b/src/pulsecore/memblock.c
@@ -55,7 +55,7 @@
  * stored in SHM and our OS does not commit the memory before we use
  * it for the first time. */
 #define PA_MEMPOOL_SLOTS_MAX 1024
-#define PA_MEMPOOL_SLOT_SIZE (64*1024)
+#define PA_MEMPOOL_SLOT_SIZE 64
 
 #define PA_MEMEXPORT_SLOTS_MAX 128
 
