diff --git a/bin/sps.py b/bin/legacy_fwr.py
similarity index 66%
rename from bin/sps.py
rename to bin/legacy_fwr.py
index e0c33e3..c7346ee 100644
--- a/bin/sps.py
+++ b/bin/legacy_fwr.py
@@ -1,13 +1,30 @@
 #!/usr/bin/python3
 
 """
-SPS importing functions.
-
-And by SPS, we mean more or less any line-delimited, fixed-width record format.
+Legacy fixed width record importing functions.
 """
 
 import builtins
-from parse_fwr import parse_fwr
+
+def parse_fwr (string, widths, start=0):
+	"""Parse a fixed-width record.
+
+	string: the string to parse.
+	widths: a list of record widths. A negative width denotes a field to be skipped.
+	start: optional start index.
+
+	Returns a list of strings.
+	"""
+	results = []
+	current_index = start
+	for width in widths:
+		if width > 0:
+			results.append(string[current_index : current_index + width])
+			current_index += width
+		else:
+			current_index -= width
+
+	return results
 
 def int (v):
 	return builtins.int(float(v))
diff --git a/bin/parse_fwr.py b/bin/parse_fwr.py
deleted file mode 100644
index 77d3b4e..0000000
--- a/bin/parse_fwr.py
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/python3
-
-def parse_fwr (string, widths, start=0):
-	"""Parse a fixed-width record.
-
-	string: the string to parse.
-	widths: a list of record widths. A negative width denotes a field to be skipped.
-	start: optional start index.
-
-	Returns a list of strings.
-	"""
-	results = []
-	current_index = start
-	for width in widths:
-		if width > 0:
-			results.append(string[current_index : current_index + width])
-			current_index += width
-		else:
-			current_index -= width
-
-	return results
diff --git a/bin/preplots.py b/bin/preplots.py
index 58be431..6b8bcbd 100644
--- a/bin/preplots.py
+++ b/bin/preplots.py
@@ -1,4 +1,4 @@
-import sps
+import legacy_fwr
 
 """
 Preplot importing functions.
@@ -7,7 +7,7 @@ Preplot importing functions.
 def from_file (file, realpath = None):
 	filepath = realpath or file["path"]
 	if not "type" in file or file["type"] == "sps":
-		records = sps.from_file(filepath, file["format"] if "format" in file else None )
+		records = legacy_fwr.from_file(filepath, file["format"] if "format" in file else None )
 	else:
 		return "Not an SPS file"