diff --git a/lib/search/float_parser.ex b/lib/search/float_parser.ex
index 8f3bbb80..157feb2a 100644
--- a/lib/search/float_parser.ex
+++ b/lib/search/float_parser.ex
@@ -1,6 +1,8 @@
 defmodule Search.FloatParser do
   import NimbleParsec
-  import Search.Helpers
+
+  defp to_number(input), do: Search.Helpers.to_number(input)
+  defp range(input), do: Search.Helpers.range(input)
 
   space =
     choice([string(" "), string("\t"), string("\n"), string("\r"), string("\v"), string("\f")])
@@ -33,4 +35,4 @@ defmodule Search.FloatParser do
     |> label("a real number, like `2.7182818' or `-10'")
 
   defparsec :parse, float_parser
-end
\ No newline at end of file
+end
diff --git a/lib/search/int_parser.ex b/lib/search/int_parser.ex
index e12744f0..61756a50 100644
--- a/lib/search/int_parser.ex
+++ b/lib/search/int_parser.ex
@@ -1,6 +1,8 @@
 defmodule Search.IntParser do
   import NimbleParsec
-  import Search.Helpers
+
+  defp to_int(input), do: Search.Helpers.to_int(input)
+  defp range(input), do: Search.Helpers.range(input)
 
   space =
     choice([string(" "), string("\t"), string("\n"), string("\r"), string("\v"), string("\f")])
@@ -26,4 +28,4 @@ defmodule Search.IntParser do
     |> label("an integer, like `3' or `-10'")
 
   defparsec :parse, int_parser
-end
\ No newline at end of file
+end
diff --git a/lib/search/lexer.ex b/lib/search/lexer.ex
index 60a3129e..925182a4 100644
--- a/lib/search/lexer.ex
+++ b/lib/search/lexer.ex
@@ -1,6 +1,7 @@
 defmodule Search.Lexer do
   import NimbleParsec
-  import Search.Helpers
+
+  defp to_number(input), do: Search.Helpers.to_number(input)
 
   float =
     optional(ascii_char('-+'))
@@ -97,4 +98,4 @@ defmodule Search.Lexer do
     |> eos()
 
   defparsec :lex, search
-end
\ No newline at end of file
+end
diff --git a/lib/search/literal_parser.ex b/lib/search/literal_parser.ex
index 21e0cf2e..8db31d95 100644
--- a/lib/search/literal_parser.ex
+++ b/lib/search/literal_parser.ex
@@ -1,6 +1,7 @@
 defmodule Search.LiteralParser do
   import NimbleParsec
-  import Search.Helpers
+
+  defp to_number(input), do: Search.Helpers.to_number(input)
 
   float =
     ascii_string([?0..?9], min: 1)
@@ -55,4 +56,4 @@ defmodule Search.LiteralParser do
     ])
 
   defparsec :parse, literal
-end
\ No newline at end of file
+end