diff --git a/Makefile.mak b/Makefile.mak
index f64604f6e..7cb377a19 100644
--- a/Makefile.mak
+++ b/Makefile.mak
@@ -157,7 +157,7 @@ endif
 #
 
 CFLAGS_JERRY = $(CFLAGS_WARNINGS) $(CFLAGS_WERROR) $(CFLAGS_WFATAL_ERRORS)
-DEFINES_JERRY = -DMEM_HEAP_CHUNK_SIZE=$$((256)) -DMEM_HEAP_AREA_SIZE=$$((32768)) -DMEM_STATS
+DEFINES_JERRY = -DMEM_HEAP_CHUNK_SIZE=$$((64)) -DMEM_HEAP_AREA_SIZE=$$((2 * 1024 + 512)) -DMEM_STATS
 
 # FIXME:
 #  Add common-io.c and sensors.c