diff --git a/test/test_uops.py b/test/test_uops.py
index 2910b5a664..31bce05bb9 100644
--- a/test/test_uops.py
+++ b/test/test_uops.py
@@ -7,6 +7,7 @@ from tinygrad.device import Buffer, Device
 from tinygrad.ops import UnaryOps, BinaryOps, TernaryOps
 from tinygrad.device import CompiledASTRunner, Compiled
 from tinygrad.codegen.linearizer import UOps, UOp
+from tinygrad.runtime.ops_python import exec_alu
 from test.test_dtype import is_dtype_supported
 
 def _uops_to_prg(uops):
@@ -109,5 +110,9 @@ class TestNonFloatUOps(TestUOps):
   def test_where_float16(self):
     self._test_top_fxn(TernaryOps.WHERE, lambda a,b,c: b if a!=0 else c, (PtrDType(dtypes.bool), PtrDType(dtypes.float16), PtrDType(dtypes.float16)))
 
+class TestExecALU(TestUOps):
+  def test_sqrt(self):
+    self.assertEqual(exec_alu(UnaryOps.SQRT, dtypes.int, (0,)), 0)
+
 if __name__ == '__main__':
   unittest.main(verbosity=2)
diff --git a/tinygrad/runtime/ops_python.py b/tinygrad/runtime/ops_python.py
index 540e3c792d..429879eed4 100644
--- a/tinygrad/runtime/ops_python.py
+++ b/tinygrad/runtime/ops_python.py
@@ -19,7 +19,7 @@ def exec_alu(arg, dtype, p):
   if arg == UnaryOps.EXP2:
     try: return math.exp(p[0]*math.log(2))
     except OverflowError: return math.inf
-  if arg == UnaryOps.SQRT: return math.sqrt(p[0]) if p[0] > 0 else math.nan
+  if arg == UnaryOps.SQRT: return math.sqrt(p[0]) if p[0] >= 0 else math.nan
   if arg == UnaryOps.SIN: return math.sin(p[0])
   if arg == UnaryOps.NEG: return -p[0]
   if arg == BinaryOps.MUL: return p[0]*p[1]
@@ -214,4 +214,4 @@ class PythonAllocator(Allocator):
 
 class PythonDevice(Compiled):
   def __init__(self, device:str):
-    super().__init__(device, PythonAllocator(), PythonCompiler(), PythonProgram)
\ No newline at end of file
+    super().__init__(device, PythonAllocator(), PythonCompiler(), PythonProgram)