diff --git a/pynvml/nvml.py b/pynvml/nvml.py
index d09894b..6174672 100644
--- a/pynvml/nvml.py
+++ b/pynvml/nvml.py
@@ -4278,11 +4278,13 @@ def nvmlDeviceSetGpcClkVfOffset(device, offset):
     _nvmlCheckReturn(ret)
     return ret
 
-def nvmlDeviceGetGpcClkMinMaxVfOffset(device, minOffset, maxOffset):
+def nvmlDeviceGetGpcClkMinMaxVfOffset(device):
+    min_offset = c_uint32()
+    max_offset = c_uint32()
     fn = _nvmlGetFunctionPointer("nvmlDeviceGetGpcClkMinMaxVfOffset")
-    ret = fn(device, minOffset, maxOffset)
+    ret = fn(device, byref(min_offset), byref(max_offset))
     _nvmlCheckReturn(ret)
-    return ret
+    return min_offset.value, max_offset.value
 
 def nvmlDeviceGetMemClkVfOffset(device):
     offset = c_int32()