diff --git a/src/detection/swap/swap_windows.c b/src/detection/swap/swap_windows.c
index 0755d52f2..f541f1964 100644
--- a/src/detection/swap/swap_windows.c
+++ b/src/detection/swap/swap_windows.c
@@ -26,4 +26,6 @@ const char* ffDetectSwap(FFSwapResult* swap)
     }
     swap->bytesUsed = (uint64_t)pstart->TotalUsed * sysInfo.dwPageSize;
     swap->bytesTotal = (uint64_t)pstart->CurrentSize * sysInfo.dwPageSize;
+
+    return NULL;
 }