diff --git a/OscCommentMacroListener.py b/OscCommentMacroListener.py
index 3092a6b..07d41bc 100644
--- a/OscCommentMacroListener.py
+++ b/OscCommentMacroListener.py
@@ -45,14 +45,6 @@ def beautify_lisp_string(in_string):
     return out_string
 
 
-# floating point ranges
-def frange(start, stop, step=1):
-    i = start
-    while i < stop:
-        yield i
-        i += step
-
-
 class HogDevice():
     # button state constants
     buttonDOWN = 1
@@ -123,10 +115,11 @@ class OscCommentMacroListener(CommentMacroListener):
             ctx.parentCtx.targets.append(ctx.value)
 
     def exitSpan(self, ctx: CommentMacroParser.SpanContext):
-        minimum = min(ctx.n1.value, ctx.n2.value)
-        maximum = max(ctx.n1.value, ctx.n2.value)
-        for i in (frange(minimum, maximum + 1)):
-            ctx.parentCtx.targets.append(i)
+        lower = min(ctx.n1.value, ctx.n2.value)
+        upper = max(ctx.n1.value, ctx.n2.value)
+        while lower <= upper:
+            ctx.parentCtx.targets.append(lower)
+            lower += 1
 
     def exitMasterGo(self, ctx: CommentMacroParser.MasterGoContext):
         if ctx.target() is None: