diff --git a/Lib/fontTools/merge/__init__.py b/Lib/fontTools/merge/__init__.py
index babc33192..3824b3f6e 100644
--- a/Lib/fontTools/merge/__init__.py
+++ b/Lib/fontTools/merge/__init__.py
@@ -57,7 +57,7 @@ class Merger(object):
 		fonts = [ttLib.TTFont(fontfile) for fontfile in fontfiles]
 		for font,fontfile in zip(fonts, fontfiles):
 			font.fontfile = fontfile
-			font.name = font['name'].getDebugName(3)
+			font.name = font['name'].getDebugName(4)
 		return fonts
 
 	def merge(self, fontfiles):
diff --git a/Lib/fontTools/merge/cmap.py b/Lib/fontTools/merge/cmap.py
index 458b34b03..4ae72b6f5 100644
--- a/Lib/fontTools/merge/cmap.py
+++ b/Lib/fontTools/merge/cmap.py
@@ -73,7 +73,7 @@ def computeMegaCmap(merger, tables):
 				format12 = subtable
 			else:
 				log.warning(
-					"Dropped cmap subtable from font [%s]:\t"
+					"Dropped cmap subtable from font '%s':\t"
 					"format %2s, platformID %2s, platEncID %2s",
 					fontIdx, subtable.format, subtable.platformID, subtable.platEncID
 				)
diff --git a/Lib/fontTools/merge/layout.py b/Lib/fontTools/merge/layout.py
index c6919b018..cbed54422 100644
--- a/Lib/fontTools/merge/layout.py
+++ b/Lib/fontTools/merge/layout.py
@@ -182,7 +182,7 @@ def merge(self, m, tables):
 	for i,(table,dups) in enumerate(zip(tables, m.duplicateGlyphsPerFont)):
 		if not dups: continue
 		if table is None or table is NotImplemented:
-			log.warning("Have non-identical duplicates to resolve for font %d but no GSUB. Are duplicates intended?: %s" % (i + 1, dups))
+			log.warning("Have non-identical duplicates to resolve for '%s' but no GSUB. Are duplicates intended?: %s" % (m.fonts[i].name, dups))
 			continue
 
 		synthFeature = None