diff --git a/src/opencl.c b/src/opencl.c
index 1d59040d0..99e3e0bae 100644
--- a/src/opencl.c
+++ b/src/opencl.c
@@ -1158,9 +1158,12 @@ int gidd_to_pw_t (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device_param, c
   const u32 cnt = pw_idx.cnt;
   const u32 len = pw_idx.len;
 
-  CL_rc = hc_clEnqueueReadBuffer (hashcat_ctx, device_param->command_queue, device_param->d_pws_comp_buf, CL_TRUE, off * sizeof (u32), cnt * sizeof (u32), pw->i, 0, NULL, NULL);
+  if (cnt > 0)
+  {
+    CL_rc = hc_clEnqueueReadBuffer (hashcat_ctx, device_param->command_queue, device_param->d_pws_comp_buf, CL_TRUE, off * sizeof (u32), cnt * sizeof (u32), pw->i, 0, NULL, NULL);
 
-  if (CL_rc == -1) return -1;
+    if (CL_rc == -1) return -1;
+  }
 
   for (u32 i = cnt; i < 64; i++)
   {