diff --git a/src/platform/cannonlake/include/platform/lib/memory.h b/src/platform/cannonlake/include/platform/lib/memory.h
index 7e5c21b03..bd1033377 100644
--- a/src/platform/cannonlake/include/platform/lib/memory.h
+++ b/src/platform/cannonlake/include/platform/lib/memory.h
@@ -215,7 +215,11 @@
 #define HP_SRAM_WIN3_SIZE	SRAM_TRACE_SIZE
 
 #define HEAP_HP_BUFFER_BASE		(SRAM_TRACE_BASE + SRAM_TRACE_SIZE)
+#if CONFIG_COMP_KPB
+#define HEAP_HP_BUFFER_SIZE		0x40000
+#else
 #define HEAP_HP_BUFFER_SIZE		0x20000
+#endif
 #define HEAP_HP_BUFFER_BLOCK_SIZE	0x180
 #define HEAP_HP_BUFFER_COUNT \
 			(HEAP_HP_BUFFER_SIZE / HEAP_HP_BUFFER_BLOCK_SIZE)