diff --git a/tinygrad/runtime/support/system.py b/tinygrad/runtime/support/system.py
index d3eb573ba2..44e5606186 100644
--- a/tinygrad/runtime/support/system.py
+++ b/tinygrad/runtime/support/system.py
@@ -165,6 +165,10 @@ class PCIDevice:
       FileIOInterface(f"/sys/bus/pci/devices/{self.pcibus}/driver/unbind", os.O_WRONLY).write(self.pcibus)
     if FileIOInterface.exists(f"/sys/bus/pci/devices/{self.pcibus}/driver"): raise RuntimeError(f"Driver is bound to {pcibus}")
 
+    # remove sibling functions of the gpu, if any
+    for fn in range(1, 8):
+      if FileIOInterface.exists(sib:=f"/sys/bus/pci/devices/{self.pcibus[:-1]}{fn}"): FileIOInterface(f"{sib}/remove", os.O_WRONLY).write("1")
+
     if getenv("VFIO", 0) and (vfio_fd:=System.vfio) is not None:
       FileIOInterface(f"/sys/bus/pci/devices/{self.pcibus}/driver_override", os.O_WRONLY).write("vfio-pci")
       FileIOInterface("/sys/bus/pci/drivers_probe", os.O_WRONLY).write(self.pcibus)