diff --git a/src/util.c b/src/util.c
index f8c3321a1d3c..98cd9ddf6407 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1176,7 +1176,10 @@ int fsyncFileDir(const char *filename) {
 int reclaimFilePageCache(int fd, size_t offset, size_t length) {
 #ifdef HAVE_FADVISE
     int ret = posix_fadvise(fd, offset, length, POSIX_FADV_DONTNEED);
-    if (ret) return -1;
+    if (ret) {
+        errno = ret;
+        return -1;
+    }
     return 0;
 #else
     UNUSED(fd);