diff --git a/src/core/impl/system.cpp b/src/core/impl/system.cpp
index e36bb8ab3b63c5e7be8b0410536a3794d17a8632..7e3cbe440c628f3db7fd4ad67510c8304126c6b3 100644
--- a/src/core/impl/system.cpp
+++ b/src/core/impl/system.cpp
@@ -127,7 +127,7 @@ std::pair<size_t, size_t> sys::get_ram_status_bytes() {
     mgb_assert(!err);
     std::pair<size_t, size_t> ret;
     ret.first = info.totalram * info.mem_unit;
-    ret.second = (info.totalram + info.bufferram) * info.mem_unit;
+    ret.second = (info.freeram + info.bufferram) * info.mem_unit;
     return ret;
 #endif
 }