diff --git a/src/unix/core.c b/src/unix/core.c
index 48dbfd0a..0db5f828 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -204,8 +204,14 @@ int uv__getiovmax(void) {
   return IOV_MAX;
 #elif defined(_SC_IOV_MAX)
   static int iovmax = -1;
-  if (iovmax == -1)
+  if (iovmax == -1) {
     iovmax = sysconf(_SC_IOV_MAX);
+    /* On some embedded devices (arm-linux-uclibc based ip camera),
+     * sysconf(_SC_IOV_MAX) can not get the correct value. The return
+     * value is -1 and the errno is EINPROGRESS. Degrade the value to 1.
+     */
+    if (iovmax == -1) iovmax = 1;
+  }
   return iovmax;
 #else
   return 1024;