diff --git a/Lib/fontTools/fontBuilder.py b/Lib/fontTools/fontBuilder.py
index 2498730c3..028b9f029 100644
--- a/Lib/fontTools/fontBuilder.py
+++ b/Lib/fontTools/fontBuilder.py
@@ -76,6 +76,7 @@ And here's how to build a minimal OTF:
 from fontTools.fontBuilder import FontBuilder
 from fontTools.pens.t2CharStringPen import T2CharStringPen
 
+
 def drawTestGlyph(pen):
     pen.moveTo((100, 100))
     pen.lineTo((100, 1000))
@@ -83,6 +84,7 @@ def drawTestGlyph(pen):
     pen.lineTo((500, 100))
     pen.closePath()
 
+
 fb = FontBuilder(1024, isTTF=False)
 fb.setupGlyphOrder([".notdef", ".null", "A", "a"])
 fb.setupCharacterMap({65: "A", 97: "a"})
@@ -91,15 +93,24 @@ advanceWidths = {".notdef": 600, "A": 600, "a": 600, ".null": 600}
 
 familyName = "HelloTestFont"
 styleName = "TotallyNormal"
-nameStrings = dict(familyName=dict(en="HelloTestFont", nl="HalloTestFont"),
-                   styleName=dict(en="TotallyNormal", nl="TotaalNormaal"))
-nameStrings['psName'] = familyName + "-" + styleName
+nameStrings = dict(
+    familyName=dict(en=familyName, nl="HalloTestFont"),
+    styleName=dict(en=styleName, nl="TotaalNormaal"),
+    uniqueFontIdentifier="fontBuilder: " + familyName + "." + styleName,
+    fullName=familyName + "-" + styleName,
+    psName=familyName + "-" + styleName,
+)
 
 pen = T2CharStringPen(600, None)
 drawTestGlyph(pen)
 charString = pen.getCharString()
-charStrings = {".notdef": charString, "A": charString, "a": charString, ".null": charString}
-fb.setupCFF(nameStrings['psName'], {"FullName": nameStrings['psName']}, charStrings, {})
+charStrings = {
+    ".notdef": charString,
+    "A": charString,
+    "a": charString,
+    ".null": charString,
+}
+fb.setupCFF(nameStrings["psName"], {"FullName": nameStrings["psName"]}, charStrings, {})
 
 lsb = {gn: cs.calcBounds(None)[0] for gn, cs in charStrings.items()}
 metrics = {}