diff --git a/sdk/cmake/qemu.cmake b/sdk/cmake/qemu.cmake
index 806233f..22ee75e 100644
--- a/sdk/cmake/qemu.cmake
+++ b/sdk/cmake/qemu.cmake
@@ -23,7 +23,7 @@ add_custom_target(diskimg
 add_custom_target(testkvm
                   DEPENDS diskimg
                   COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-KVM" -machine type=q35,kernel_irqchip=on,accel=kvm,mem-merge=off,vmport=off -enable-kvm -cpu host,-hypervisor,+topoext
-                                          -smp 2,sockets=1,cores=1,threads=2 -m 4G -mem-prealloc -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                          -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
                                           -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
                                           -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
                                           -hda ${EXECTOS_BINARY_DIR}/output/disk.img
@@ -34,7 +34,7 @@ add_custom_target(testkvm
 add_custom_target(testtcg
                   DEPENDS diskimg
                   COMMAND ${QEMU_COMMAND} -name "ExectOS-${ARCH}-TCG" -machine type=q35,accel=tcg -cpu max,-hypervisor
-                                          -smp 2,sockets=1,cores=1,threads=2 -m 4G -mem-prealloc -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
+                                          -smp 2,sockets=1,cores=1,threads=2 -m 4G -overcommit mem-lock=off -rtc clock=host,base=localtime,driftfix=none
                                           -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_code_${ARCH}.fd,if=pflash,format=raw,unit=0,readonly=on
                                           -drive file=${EXECTOS_SOURCE_DIR}/sdk/ovmf/ovmf_vars_${ARCH}.fd,if=pflash,format=raw,unit=1
                                           -hda ${EXECTOS_BINARY_DIR}/output/disk.img