diff --git a/src/fcstat.c b/src/fcstat.c
index d4431e0..d1730fd 100644
--- a/src/fcstat.c
+++ b/src/fcstat.c
@@ -268,11 +268,11 @@ FcFStatFs (int fd, FcStatFS *statb)
     int ret = -1;
     FcBool flag = FcFalse;
 
-    memset (statb, 0, sizeof (FcStatFS));
-
 #if defined(HAVE_FSTATVFS) && (defined(HAVE_STRUCT_STATVFS_F_BASETYPE) || defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME))
     struct statvfs buf;
 
+    memset (statb, 0, sizeof (FcStatFS));
+
     if ((ret = fstatvfs (fd, &buf)) == 0)
     {
 #  if defined(HAVE_STRUCT_STATVFS_F_BASETYPE)
@@ -284,6 +284,8 @@ FcFStatFs (int fd, FcStatFS *statb)
 #elif defined(HAVE_FSTATFS) && (defined(HAVE_STRUCT_STATFS_F_FLAGS) || defined(HAVE_STRUCT_STATFS_F_FSTYPENAME) || defined(__linux__))
     struct statfs buf;
 
+    memset (statb, 0, sizeof (FcStatFS));
+
     if ((ret = fstatfs (fd, &buf)) == 0)
     {
 #  if defined(HAVE_STRUCT_STATFS_F_FLAGS) && defined(MNT_LOCAL)