diff --git a/psutil/_psutil_windows.c b/psutil/_psutil_windows.c
index 5055b2d7b..05c3541f5 100644
--- a/psutil/_psutil_windows.c
+++ b/psutil/_psutil_windows.c
@@ -617,28 +617,28 @@ psutil_virtual_mem(PyObject *self, PyObject *args) {
         return NULL;
     }
     pageSize = perfInfo.PageSize;
-    total = perfInfo.PhysicalTotal * pageSize;
-    avail = perfInfo.PhysicalAvailable * pageSize;
-    vTotal = perfInfo.CommitLimit * pageSize;
-    vAvail = vTotal - perfInfo.CommitTotal * pageSize;
+    totalPhys = perfInfo.PhysicalTotal * pageSize;
+    availPhys = perfInfo.PhysicalAvailable * pageSize;
+    totalPageFile = perfInfo.CommitLimit * pageSize;
+    availPageFile = totalPageFile - perfInfo.CommitTotal * pageSize;
     // PERFORMANCE_INFORMATION values are defined as SIZE_T which on 64bits
     // is an (unsigned long long) and on 32bits is an (unsigned int).
 #if defined(_WIN64)
     return Py_BuildValue("(LLLLLL)",
-                         (unsigned long long) total,
-                         (unsigned long long) avail,
-                         (unsigned long long) vTotal - total,
-                         (unsigned long long) vAvail - avail,
-                         (unsigned long long) vTotal,
-                         (unsigned long long) vAvail);
+                         (unsigned long long) totalPhys,
+                         (unsigned long long) availPhys,
+                         (unsigned long long) totalPageFile,
+                         (unsigned long long) availPageFile,
+                         (unsigned long long) (totalPhys + totalPageFile),
+                         (unsigned long long) (availPhys + availPageFile));
 #else
     return Py_BuildValue("(IIIIII)",
-                         (unsigned int) total,
-                         (unsigned int) avail,
-                         (unsigned int) vTotal - total,
-                         (unsigned int) vAvail - avail,
-                         (unsigned int) vTotal,
-                         (unsigned int) vAvail);
+                         (unsigned int) totalPhys,
+                         (unsigned int) availPhys,
+                         (unsigned int) totalPageFile,
+                         (unsigned int) availPageFile,
+                         (unsigned int) (totalPhys + totalPageFile),
+                         (unsigned int) (availPhys + availPageFile));
 #endif
 }