diff --git a/src/detection/swap/swap_linux.c b/src/detection/swap/swap_linux.c
index 4ed2e6475..982d75739 100644
--- a/src/detection/swap/swap_linux.c
+++ b/src/detection/swap/swap_linux.c
@@ -1,15 +1,34 @@
 #include "swap.h"
 
-#include <sys/sysinfo.h>
+#include "common/io/io.h"
+#include "util/mallocHelper.h"
+
+#include <inttypes.h>
 
 const char* ffDetectSwap(FFSwapResult* swap)
 {
-    struct sysinfo info;
-    if(sysinfo(&info) != 0)
-        return "sysinfo() failed";
+    // #620
+    FF_AUTO_CLOSE_FILE FILE* meminfo = fopen("/proc/meminfo", "r");
+    if (!meminfo) return "fopen(\"/proc/meminfo\", \"r\") failed";
 
-    swap->bytesTotal = info.totalswap * (uint64_t) info.mem_unit;
-    swap->bytesUsed = (info.totalswap - info.freeswap) * (uint64_t) info.mem_unit;
+    uint64_t swapTotal = 0, swapFree = 0;
+
+    char* FF_AUTO_FREE line = NULL;
+    size_t len = 0;
+    uint8_t count = 0;
+
+    while (getline(&line, &len, meminfo) != EOF)
+    {
+        if (line[0] == 'S')
+        {
+            if(sscanf(line, "SwapTotal: %" PRIu64, &swapTotal) > 0 || sscanf(line, "SwapFree: %" PRIu64, &swapFree) > 0)
+                if (++count >= 2) goto done;
+        }
+    }
+
+done:
+    swap->bytesTotal = swapTotal * 1024lu;
+    swap->bytesUsed = (swapTotal - swapFree) * 1024lu;
 
     return NULL;
 }