diff --git a/python/tvm/topi/math.py b/python/tvm/topi/math.py
index fb306f9e599b..61b39aad9114 100644
--- a/python/tvm/topi/math.py
+++ b/python/tvm/topi/math.py
@@ -450,7 +450,6 @@ def round(x):
     return te.compute(x.shape, lambda *i: te.round(x(*i)))
 
 
-@tvm.te.tag_scope(tag=tag.ELEMWISE)
 def log(x):
     """Take logarithm of input x.
 
@@ -464,10 +463,11 @@ def log(x):
     y : tvm.te.Tensor
         The result.
     """
-    return te.compute(x.shape, lambda *i: te.log(x(*i)))
+    if x.dtype.startswith("int"):
+        x = te.compute(x.shape, lambda *i: x(*i).astype("float32"))
+    return te.compute(x.shape, lambda *i: te.log(x(*i)), tag=tag.ELEMWISE)
 
 
-@tvm.te.tag_scope(tag=tag.ELEMWISE)
 def log2(x):
     """Take logarithm to the base 2 of input x.
 
@@ -481,7 +481,9 @@ def log2(x):
     y : tvm.te.Tensor
         The result.
     """
-    return te.compute(x.shape, lambda *i: te.log2(x(*i)))
+    if x.dtype.startswith("int"):
+        x = te.compute(x.shape, lambda *i: x(*i).astype("float32"))
+    return te.compute(x.shape, lambda *i: te.log2(x(*i)), tag=tag.ELEMWISE)
 
 
 def log10(x):