diff --git a/app/overlays/ptl/ll_userspace_overlay.conf b/app/overlays/ptl/ll_userspace_overlay.conf
index b799736240f8..28a6e4ea044b 100644
--- a/app/overlays/ptl/ll_userspace_overlay.conf
+++ b/app/overlays/ptl/ll_userspace_overlay.conf
@@ -37,3 +37,5 @@ CONFIG_XRUN_NOTIFICATIONS_ENABLE=n
 # enabled and uses the vmh allocation intended for KBP.
 # TODO: needs some better solution to allocate
 CONFIG_SOF_ZEPHYR_SYS_USER_HEAP_SIZE=0x80000
+
+CONFIG_VIRTUAL_HEAP=n
diff --git a/zephyr/Kconfig b/zephyr/Kconfig
index 651b1ec16775..514f5133bfc5 100644
--- a/zephyr/Kconfig
+++ b/zephyr/Kconfig
@@ -84,7 +84,7 @@ config SOF_ZEPHYR_HEAP_SIZE
 	hex "Size of the Zephyr heap for SOF"
 	default 0x40000 if VIRTUAL_HEAP
 	default 0xF0000 if SOC_ACE15_MTPM || SOC_ACE20_LNL
-	default 0xD0000 if SOC_ACE30 || SOC_ACE40
+	default 0x100000 if SOC_ACE30 || SOC_ACE40
 	default 0x0
 	help
 	 Support scaling of the heap size for different platforms and different types
@@ -129,7 +129,8 @@ config SOF_ZEPHYR_VIRTUAL_HEAP_REGION_SIZE
 	hex "Size in bytes of virtual memory region for virtual heap shared for all cores"
 	depends on MM_DRV_INTEL_ADSP_MTL_TLB
 	default 0x140000 if VIRTUAL_HEAP_EXTENDED
-	default 0x100000
+	default 0x100000 if VIRTUAL_HEAP
+	default 0x0
 	help
 	  This config defines size of virtual heap region shared between all cores