diff --git a/lib/roo/excelx/cell/number.rb b/lib/roo/excelx/cell/number.rb
index 20155628..445d78dd 100644
--- a/lib/roo/excelx/cell/number.rb
+++ b/lib/roo/excelx/cell/number.rb
@@ -21,7 +21,7 @@ def create_numeric(number)
           when /\.0/
             Float(number)
           else
-            (number.include?('.') || (/\A[-+]?\d+E[-+]\d+\z/i =~ number)) ? Float(number) : Integer(number)
+            (number.include?('.') || (/\A[-+]?\d+E[-+]?\d+\z/i =~ number)) ? Float(number) : Integer(number)
           end
         end
 
diff --git a/test/excelx/cell/test_number.rb b/test/excelx/cell/test_number.rb
index 45db819c..b317bba8 100644
--- a/test/excelx/cell/test_number.rb
+++ b/test/excelx/cell/test_number.rb
@@ -25,6 +25,11 @@ def test_simple_scientific_notation
     assert_kind_of(Float, cell.value)
   end
 
+  def test_very_simple_scientific_notation
+    cell = Roo::Excelx::Cell::Number.new '1e6', nil, ['0'], nil, nil, nil
+    assert_kind_of(Float, cell.value)
+  end
+
   def test_percent
     cell = Roo::Excelx::Cell::Number.new '42.1', nil, ['0.00%'], nil, nil, nil
     assert_kind_of(Float, cell.value)